diff --git a/README.md b/README.md
index aa1eb37..7327c74 100644
--- a/README.md
+++ b/README.md
@@ -223,8 +223,8 @@ resp = transport.post_transaction(
         "DDvQqwqPXKd5P8dLAroFsnKR5Q3tKUtvnp", # RecipientAddress
         1000000, # Amount
         "firstPassphrase", # First passphrase, mandatory
-        "vendorField", # Vendor field, optionnal
-        "secondPassphrase") # Second passphrase, optionnal
+        "vendorField", # Vendor field, optional
+        "secondPassphrase") # Second passphrase, optional
 ```
 
 ## TODOS
diff --git a/pythark/account.py b/pythark/account.py
index 1ab73d5..d2310fd 100644
--- a/pythark/account.py
+++ b/pythark/account.py
@@ -12,7 +12,7 @@ def get_balance(self, address):
         :param address: A valid Ark address.
         :return:
         """
-        resp = self.get("api/accounts/getBalance", address=address)
+        resp = self.request('get', "api/accounts/getBalance", address=address)
         return resp.json()
 
     def get_public_key(self, address):
@@ -21,7 +21,7 @@ def get_public_key(self, address):
         :param address: A valid Ark address.
         :return:
         """
-        resp = self.get("api/accounts/getPublickey", address=address)
+        resp = self.request('get', "api/accounts/getPublickey", address=address)
         return resp.json()
 
     def get_delegate_fee(self):
@@ -29,17 +29,17 @@ def get_delegate_fee(self):
 
         :return:
         """
-        resp = self.get("api/accounts/delegates/fee")
+        resp = self.request('get', "api/accounts/delegates/fee")
         return resp.json()
 
     def get_delegates(self, address, **kwargs):
         """ Get the delegates of an account.
 
         :param address: A valid Ark address.
-        :param kwargs: Optionnal parameters. orderBy, limit, offset
+        :param kwargs: Optional parameters. orderBy, limit, offset
         :return:
         """
-        resp = self.get("api/accounts/delegates", address=address, **kwargs)
+        resp = self.request('get', "api/accounts/delegates", address=address, **kwargs)
         return resp.json()
 
     def get_accounts(self, address):
@@ -48,14 +48,14 @@ def get_accounts(self, address):
         :param address: A valid Ark address.
         :return:
         """
-        resp = self.get("api/accounts", address=address)
+        resp = self.request('get', "api/accounts", address=address)
         return resp.json()
 
     def get_top_accounts(self, **kwargs):
         """ Get a list of top account
 
-        :param kwargs: Optionnal parameters. limit, offset
+        :param kwargs: Optional parameters. limit, offset
         :return:
         """
-        resp = self.get("api/accounts/top", **kwargs)
+        resp = self.request('get', "api/accounts/top", **kwargs)
         return resp.json()
diff --git a/pythark/api.py b/pythark/api.py
index 1a8886f..b38c12c 100644
--- a/pythark/api.py
+++ b/pythark/api.py
@@ -1,15 +1,38 @@
 import requests
-import random
-import json
 from retrying import retry
 
-BASE_URL = "https://api.arknode.net/" # "http://37.59.129.164:4001/"
-BASE_URL_DEV = "http://167.114.29.52:4002/"
-BASE_URL_KAPUMAIN = "https://walletapi.kapu.one/"
-
-FALLBACKS_MAIN_ADDRESSES = []
-FALLBACKS_DEV_ADDRESSES = []
-FALLBACKS_KAPU_ADDRESSES = []
+NETWORKS = {
+    'main': {
+        'base_urls': [
+            'https://node1.arknet.cloud/'
+        ],
+        'headers': {
+            'nethash': '6e84d08bd299ed97c212c886c98a57e36545c8f5d645ca7eeae63a8bd62d8988',
+            'version': '1.0.1',
+            'port': '4001'
+        }
+    },
+    'dev': {
+        'base_urls': [
+            'http://167.114.29.52:4002/'
+        ],
+        'headers': {
+            'nethash': '578e820911f24e039733b45e4882b73e301f813a0d2c31330dafda84534ffa23',
+            'version': '1.1.1',
+            'port': '4002'
+        }
+    },
+    'kapu': {
+        'base_urls': [
+            'https://walletapi.kapu.one/'
+        ],
+        'headers': {
+            'nethash': '6e84d08bd299ed97c212c886c98a57e36545c8f5d645ca7eeae63a8bd62d8988',
+            'version': '1.0.1',
+            'port': '4001'
+        }
+    }
+}
 
 
 class API:
@@ -20,94 +43,26 @@ def __init__(self, network="main"):
         self.network = network
 
     @retry(stop_max_attempt_number=10, wait_fixed=10000)
-    def get(self, endpoint, **kwargs):
-        """ Do a HTTP get request to a specified endpoint (with optionnal parameters).
+    def request(self, req_type, endpoint, **kwargs):
+        """ Do a HTTP request to a specified endpoint (with optional parameters).
 
+        :param req_type: The request type. Either `get` or `post`.
         :param endpoint: The endpoint we want to reach.
-        :param kwargs: Optionnal parameters of the query.
+        :param kwargs: Optional parameters of the query.
         :return: Request response if HTTP code is equal to 200.
         """
         payload = {name: kwargs[name] for name in kwargs if kwargs[name] is not None}
-        try:
-            if self.network == "main":
-                headers_main = get_main_network_headers()
-                r = requests.get("{0}{1}".format(BASE_URL, endpoint), headers=headers_main, params=payload, timeout=10)
-            if self.network == "dark" or self.network == "dev":
-                headers_dev = get_dev_network_headers()
-                r = requests.get("{0}{1}".format(BASE_URL_DEV, endpoint), headers=headers_dev, params=payload, timeout=10)
-            if self.network == "kapu":
-                headers_kapu_main = get_kapu_main_network_headers()
-                r = requests.get("{0}{1}".format(BASE_URL_KAPUMAIN, endpoint), headers=headers_kapu_main, params=payload, timeout=10)
-            if r.status_code == 200:
-                return r
-        except requests.exceptions.Timeout:
-            if self.network == "dark" or self.network == "dev":
-                populate_fallback(FALLBACKS_DEV_ADDRESSES, self.network)
-                url = select_random_ip(FALLBACKS_DEV_ADDRESSES) + "/"
-                r = requests.get("{0}{1}".format(url, endpoint), headers=headers_dev, params=payload, timeout=10)
-            elif self.network == "kapu":
-                populate_fallback(FALLBACKS_KAPU_ADDRESSES, self.network)
-                url = select_random_ip(FALLBACKS_KAPU_ADDRESSES) + "/"
-                r = requests.get("{0}{1}".format(url, endpoint), headers=headers_kapu_main, params=payload, timeout=10)
-            else:
-                populate_fallback(FALLBACKS_MAIN_ADDRESSES, self.network)
-                url = select_random_ip(FALLBACKS_MAIN_ADDRESSES) + "/"
-                r = requests.get("{0}{1}".format(url, endpoint), headers=headers_main, params=payload, timeout=10)
-            if r.status_code == 200:
-                return r
-        except requests.exceptions.ConnectionError as e:
-            print("Connection error : ", e)
-        except requests.exceptions.ReadTimeout as e:
-            print("ReadTimeOut error : ", e)
-
-    def post(self, endpoint, **kwargs):
-        payload = {name: kwargs[name] for name in kwargs if kwargs[name] is not None}
-        r = requests.post("{0}{1}".format(BASE_URL, endpoint), headers=get_dev_network_headers(), params=payload)
-        return r
-
-
-def get_main_network_headers():
-    headers = {
-        "nethash": "6e84d08bd299ed97c212c886c98a57e36545c8f5d645ca7eeae63a8bd62d8988",
-        "version": "1.0.1",
-        "port": "4001"
-    }
-    return headers
-
-
-def get_dev_network_headers():
-    headers = {
-        "nethash": "578e820911f24e039733b45e4882b73e301f813a0d2c31330dafda84534ffa23",
-        "version": "1.1.1",
-        "port": "4002"
-    }
-    return headers
-
-
-def get_kapu_main_network_headers():
-    headers = {
-        "nethash": "6e84d08bd299ed97c212c886c98a57e36545c8f5d645ca7eeae63a8bd62d8988",
-        "version": "1.0.1",
-        "port": "4001"
-    }
-    return headers
-
-
-def populate_fallback(fallback, network):
-    from . import Peer
-    if network == 'dev':
-        p = Peer("dev")
-    elif network == 'kapu':
-        p = Peer("kapu")
-    else:
-        p = Peer()
-    r = p.get_peers()
-    for peer in r["peers"]:
-        if peer["delay"] <= 50:
-            fallback.append(peer)
-    return fallback
-
-
-def select_random_ip(fallback):
-    rand = random.choice(fallback)
-    return rand['ip']
+        headers = NETWORKS[self.network]['headers']
+        for i, base_url in enumerate(NETWORKS[self.network]['base_urls']):
+            try:
+                if req_type == 'post':
+                    r = requests.post(base_url + endpoint, headers=headers, params=payload, timeout=10)
+                elif req_type == 'get':
+                    r = requests.get(base_url + endpoint, headers=headers, params=payload, timeout=10)
+                else:
+                    raise ValueError('Invalid request type: ' + req_type)
+                if r.status_code == 200:
+                    return r
+            except (requests.exceptions.Timeout, requests.exceptions.ConnectionError) as e:
+                print("URL #{} failed: {}".format(i + 1, e))
+        print('Failed to process {} request'.format(req_type))
diff --git a/pythark/block.py b/pythark/block.py
index 407800e..c4da3d1 100644
--- a/pythark/block.py
+++ b/pythark/block.py
@@ -12,17 +12,17 @@ def get_block(self, id):
         :param id: Valid Block ID.
         :return:
         """
-        resp = self.get("api/blocks/get", id=id)
+        resp = self.request('get', "api/blocks/get", id=id)
         return resp.json()
 
     def get_blocks(self, **kwargs):
         """ Get all blocks.
 
-        :param kwargs: Optionnal parameters. limit, orderBy, offset, generatorPublicKey, totalAmount, totalFee, reward,
+        :param kwargs: Optional parameters. limit, orderBy, offset, generatorPublicKey, totalAmount, totalFee, reward,
         previousBlock, height
         :return:
         """
-        resp = self.get("api/blocks", **kwargs)
+        resp = self.request('get', "api/blocks", **kwargs)
         return resp.json()
 
     def get_height(self):
@@ -30,7 +30,7 @@ def get_height(self):
 
         :return:
         """
-        resp = self.get("api/blocks/getHeight")
+        resp = self.request('get', "api/blocks/getHeight")
         return resp.json()
 
     def get_epoch(self):
@@ -38,7 +38,7 @@ def get_epoch(self):
 
         :return:
         """
-        resp = self.get("api/blocks/getEpoch")
+        resp = self.request('get', "api/blocks/getEpoch")
         return resp.json()
 
     def get_nethash(self):
@@ -46,7 +46,7 @@ def get_nethash(self):
 
         :return:
         """
-        resp = self.get("api/blocks/getNethash")
+        resp = self.request('get', "api/blocks/getNethash")
         return resp.json()
 
     def get_fee(self):
@@ -54,7 +54,7 @@ def get_fee(self):
 
         :return:
         """
-        resp = self.get("api/blocks/getFee")
+        resp = self.request('get', "api/blocks/getFee")
         return resp.json()
 
     def get_fees(self):
@@ -62,7 +62,7 @@ def get_fees(self):
 
         :return:
         """
-        resp = self.get("api/blocks/getFees")
+        resp = self.request('get', "api/blocks/getFees")
         return resp.json()
 
     def get_milestone(self):
@@ -70,7 +70,7 @@ def get_milestone(self):
 
         :return:
         """
-        resp = self.get("api/blocks/getMilestone")
+        resp = self.request('get', "api/blocks/getMilestone")
         return resp.json()
 
     def get_reward(self):
@@ -78,7 +78,7 @@ def get_reward(self):
 
         :return:
         """
-        resp = self.get("api/blocks/getReward")
+        resp = self.request('get', "api/blocks/getReward")
         return resp.json()
 
     def get_supply(self):
@@ -86,7 +86,7 @@ def get_supply(self):
 
         :return:
         """
-        resp = self.get("api/blocks/getSupply")
+        resp = self.request('get', "api/blocks/getSupply")
         return resp.json()
 
     def get_status(self):
@@ -94,5 +94,5 @@ def get_status(self):
 
         :return:
         """
-        resp = self.get("api/blocks/getStatus")
+        resp = self.request('get', "api/blocks/getStatus")
         return resp.json()
diff --git a/pythark/delegate.py b/pythark/delegate.py
index d093de8..f519021 100644
--- a/pythark/delegate.py
+++ b/pythark/delegate.py
@@ -12,17 +12,17 @@ def get_delegates_count(self, address):
         :param address: A valid Ark address.
         :return:
         """
-        resp = self.get("api/delegates/count", address=address)
+        resp = self.request('get', "api/delegates/count", address=address)
         return resp.json()
 
     def search_delegates(self, query, **kwargs):
         """ Search for specific delegates.
 
         :param query: The name we want to search.
-        :param kwargs: Optionnal parameters. limit
+        :param kwargs: Optional parameters. limit
         :return:
         """
-        resp = self.get("api/delegates/search", q=query, **kwargs)
+        resp = self.request('get', "api/delegates/search", q=query, **kwargs)
         return resp.json()
 
     def get_voters(self, publicKey):
@@ -31,7 +31,7 @@ def get_voters(self, publicKey):
         :param publicKey: A valid Ark publicKey.
         :return:
         """
-        resp = self.get("api/delegates/voters", publicKey=publicKey)
+        resp = self.request('get', "api/delegates/voters", publicKey=publicKey)
         return resp.json()
 
     def get_delegate(self, username):
@@ -40,7 +40,7 @@ def get_delegate(self, username):
         :param username: The delegate's name.
         :return:
         """
-        resp = self.get("api/delegates/get", username=username)
+        resp = self.request('get', "api/delegates/get", username=username)
         return resp.json()
 
     def get_delegate_publickey(self, publicKey):
@@ -49,16 +49,16 @@ def get_delegate_publickey(self, publicKey):
         :param publicKey: A valid Ark publicKey.
         :return:
         """
-        resp = self.get("api/delegates/get", publicKey=publicKey)
+        resp = self.request('get', "api/delegates/get", publicKey=publicKey)
         return resp.json()
 
     def get_delegates(self, **kwargs):
         """ Get all delegates.
 
-        :param kwargs: Optionnal parameters. orderBy, limit, offset.
+        :param kwargs: Optional parameters. orderBy, limit, offset.
         :return:
         """
-        resp = self.get("api/delegates", **kwargs)
+        resp = self.request('get', "api/delegates", **kwargs)
         return resp.json()
 
     def get_delegate_fee(self, address):
@@ -67,7 +67,7 @@ def get_delegate_fee(self, address):
         :param address:
         :return:
         """
-        resp = self.get("api/delegates/fee", address=address)
+        resp = self.request('get', "api/delegates/fee", address=address)
         return resp.json()
 
     def get_forged_by_account(self, generatorPublicKey):
@@ -76,7 +76,7 @@ def get_forged_by_account(self, generatorPublicKey):
         :param generatorPublicKey: A valid Ark generatorPublicKey.
         :return:
         """
-        resp = self.get("api/delegates/forging/getForgedByAccount", generatorPublicKey=generatorPublicKey)
+        resp = self.request('get', "api/delegates/forging/getForgedByAccount", generatorPublicKey=generatorPublicKey)
         return resp.json()
 
     def get_next_forgers(self, address):
@@ -85,5 +85,5 @@ def get_next_forgers(self, address):
         :param address: A valid Ark address.
         :return:
         """
-        resp = self.get("api/delegates/getNextForgers", address=address)
+        resp = self.request('get', "api/delegates/getNextForgers", address=address)
         return resp.json()
diff --git a/pythark/loader.py b/pythark/loader.py
index 4252450..e86c3cd 100644
--- a/pythark/loader.py
+++ b/pythark/loader.py
@@ -13,7 +13,7 @@ def get_status(self):
 
         :return:
         """
-        resp = self.get("api/loader/status")
+        resp = self.request('get', "api/loader/status")
         return resp.json()
 
     def get_sync(self):
@@ -21,7 +21,7 @@ def get_sync(self):
 
         :return:
         """
-        resp = self.get("api/loader/status/sync")
+        resp = self.request('get', "api/loader/status/sync")
         return resp.json()
 
     def autoconfigure(self):
@@ -29,5 +29,5 @@ def autoconfigure(self):
 
         :return:
         """
-        resp = self.get("api/loader/autoconfigure")
+        resp = self.request('get', "api/loader/autoconfigure")
         return resp.json()
\ No newline at end of file
diff --git a/pythark/multisignature.py b/pythark/multisignature.py
index b516444..fdff107 100644
--- a/pythark/multisignature.py
+++ b/pythark/multisignature.py
@@ -12,7 +12,7 @@ def get_pending(self, publicKey):
         :param publicKey: A valid Ark publicKey.
         :return:
         """
-        resp = self.get("api/multisignatures/pending", publicKey=publicKey)
+        resp = self.request('get', "api/multisignatures/pending", publicKey=publicKey)
         return resp.json()
 
     def get_accounts(self, publicKey):
@@ -22,5 +22,5 @@ def get_accounts(self, publicKey):
         :param publicKey: A valid Ark publicKey.
         :return:
         """
-        resp = self.get("api/multisignatures/accounts", publicKey=publicKey)
+        resp = self.request('get', "api/multisignatures/accounts", publicKey=publicKey)
         return resp.json()
diff --git a/pythark/peer.py b/pythark/peer.py
index 1bd951b..7012aa6 100644
--- a/pythark/peer.py
+++ b/pythark/peer.py
@@ -13,7 +13,7 @@ def get_peer(self, ip, port):
         :param port: Valid port of the peer.
         :return:
         """
-        resp = self.get("api/peers/get", ip=ip, port=port)
+        resp = self.request('get', "api/peers/get", ip=ip, port=port)
         return resp.json()
 
     def get_peers(self):
@@ -21,7 +21,7 @@ def get_peers(self):
 
         :return:
         """
-        resp = self.get("api/peers")
+        resp = self.request('get', "api/peers")
         return resp.json()
 
     def get_peer_version(self):
@@ -29,5 +29,5 @@ def get_peer_version(self):
 
         :return:
         """
-        resp = self.get("api/peers/version")
+        resp = self.request('get', "api/peers/version")
         return resp.json()
diff --git a/pythark/signature.py b/pythark/signature.py
index d0d22a4..1a9b7a4 100644
--- a/pythark/signature.py
+++ b/pythark/signature.py
@@ -11,7 +11,7 @@ def get_signature_fee(self):
 
         :return:
         """
-        resp = self.get("api/signatures/fee")
+        resp = self.request('get', "api/signatures/fee")
         return resp.json()
 
     def get_address_signature_fee(self, address):
@@ -20,5 +20,5 @@ def get_address_signature_fee(self, address):
         :param address: A valid Ark address.
         :return:
         """
-        resp = self.get("api/signatures/fee", address=address)
+        resp = self.request('get', "api/signatures/fee", address=address)
         return resp.json()
diff --git a/pythark/transaction.py b/pythark/transaction.py
index f07d4a5..d64aca5 100644
--- a/pythark/transaction.py
+++ b/pythark/transaction.py
@@ -12,17 +12,17 @@ def get_transaction(self, id):
         :param id: A valid Transaction id.
         :return:
         """
-        resp = self.get("api/transactions/get", id=id)
+        resp = self.request('get', "api/transactions/get", id=id)
         return resp.json()
 
     def get_transactions(self, **kwargs):
         """ Get all transactions.
 
-        :param kwargs: Optionnal parameters. blockId, limit, orderBy, offset, senderPublicKey, vendorField, ownerPublicKey,
+        :param kwargs: Optional parameters. blockId, limit, orderBy, offset, senderPublicKey, vendorField, ownerPublicKey,
         ownerAddress, senderId, recipientId, amount, fee
         :return:
         """
-        resp = self.get("api/transactions", **kwargs)
+        resp = self.request('get', "api/transactions", **kwargs)
         return resp.json()
 
     def get_unconfirmed_transaction(self, id):
@@ -31,14 +31,14 @@ def get_unconfirmed_transaction(self, id):
         :param id: A valid Transaction id.
         :return:
         """
-        resp = self.get("api/transactions/unconfirmed/get", id=id)
+        resp = self.request('get', "api/transactions/unconfirmed/get", id=id)
         return resp.json()
 
     def get_unconfirmed_transactions(self, **kwargs):
         """ Get all unconfirmed transactions.
 
-        :param kwargs: Optionnal parameters. senderPublicKey, address
+        :param kwargs: Optional parameters. senderPublicKey, address
         :return:
         """
-        resp = self.get("api/transactions/unconfirmed", **kwargs)
+        resp = self.request('get', "api/transactions/unconfirmed", **kwargs)
         return resp.json()
\ No newline at end of file
diff --git a/pythark/transport.py b/pythark/transport.py
index 25c11d9..64a590c 100644
--- a/pythark/transport.py
+++ b/pythark/transport.py
@@ -19,7 +19,7 @@ def get_peers(self):
 
         :return:
         """
-        resp = self.get("peer/list")
+        resp = self.request('get', "peer/list")
         return resp.json()
 
     def get_common_blocks(self, ids):
@@ -28,7 +28,7 @@ def get_common_blocks(self, ids):
         :param ids: List of Block ids.
         :return:
         """
-        resp = self.get("peer/blocks/common", ids=','.join(ids))
+        resp = self.request('get', "peer/blocks/common", ids=','.join(ids))
         return resp.json()
 
     def get_blocks(self, address):
@@ -37,7 +37,7 @@ def get_blocks(self, address):
         :param address: A valid Ark address.
         :return:
         """
-        resp = self.get("peer/blocks", address=address)
+        resp = self.request('get', "peer/blocks", address=address)
         return resp.json()
 
     def get_block(self, address):
@@ -47,7 +47,7 @@ def get_block(self, address):
         :param address: A valid Ark address.
         :return:
         """
-        resp = self.get("peer/block", address=address)
+        resp = self.request('get', "peer/block", address=address)
         return resp.json()
 
     def get_transactions(self):
@@ -55,7 +55,7 @@ def get_transactions(self):
 
         :return:
         """
-        resp = self.get("peer/transactions")
+        resp = self.request('get', "peer/transactions")
         return resp.json()
 
     def post_transaction(self, network, recipientId, amount, secret, vendorField="", secondSecret=""):
@@ -65,8 +65,8 @@ def post_transaction(self, network, recipientId, amount, secret, vendorField="",
         :param recipientId: A valid Ark address.
         :param amount: Amount of currency we want to transfer.
         :param secret: BIP39 seedpass.
-        :param vendorField: Optionnal vendorField.
-        :param secondSecret: Optionnal BIP39 second seedpass.
+        :param vendorField: Optional vendorField.
+        :param secondSecret: Optional BIP39 second seedpass.
         :return:
         """
         rest.use(network)
@@ -77,7 +77,7 @@ def post_transaction(self, network, recipientId, amount, secret, vendorField="",
     def post_transaction_bis(self, recipientId, amount, secret, secondSecret="", vendorField=None):
         transactions = []
 
-        resp = self.post("peer/transactions", recipientId=recipientId, amount=amount, secret=secret, secondSecret=secondSecret, vendorField=vendorField)
+        resp = self.request('post', "peer/transactions", recipientId=recipientId, amount=amount, secret=secret, secondSecret=secondSecret, vendorField=vendorField)
         return resp.json()
 
     def get_transactions_from_ids(self, ids):
@@ -86,7 +86,7 @@ def get_transactions_from_ids(self, ids):
         :param ids: A list of valid Transaction id
         :return:
         """
-        resp = self.get("peer/transactionsFromIds", ids=','.join(ids))
+        resp = self.request('get', "peer/transactionsFromIds", ids=','.join(ids))
         return resp.json()
 
     def get_height(self):
@@ -94,7 +94,7 @@ def get_height(self):
 
         :return:
         """
-        resp = self.get("peer/height")
+        resp = self.request('get', "peer/height")
         return resp.json()
 
     def get_status(self):
@@ -102,5 +102,5 @@ def get_status(self):
 
         :return:
         """
-        resp = self.get("peer/status")
+        resp = self.request('get', "peer/status")
         return resp.json()
\ No newline at end of file