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Eighteen endpoints reach end of support on 15 September

Ankr Team
Docs Team

Eighteen endpoints reach end of support on Ankr RPC on 15 September 2026. Seven networks go entirely, testnets included, and six testnets and variants go while their network stays. Seventeen of the eighteen already require a Premium key. The vFlow Volta testnet also answered keyless calls, so a keyless or Freemium integration that used it needs to move. Xai, Syscoin and Rollux are not served on the Advanced API either. No method limits, error codes or rate limits changed on any network that stays.

Deprecations and end-of-support​

Networks removed entirely, from 15 September 2026​

NetworkEndpoints that stop answering
Fuelmainnet and Sepolia testnet
Xaimainnet and testnet
Syscoinmainnet
Rolluxmainnet
Kusamamainnet
Litecoinmainnet
Tenetthe EVM endpoint, the last Tenet surface after the August end of support

We remove their API reference pages on the same date, and inbound links resolve to the chain list instead of returning a 404. The branded domains for these networks retire with them: xai-rpc.com, syscoin.public-rpc.com, rollux.public-rpc.com, tenet-evm.public-rpc.com and fuel-rpc.com.

Advanced API​

Xai, Syscoin and Rollux are not served on the Advanced API. An ankr_* call that passes one of them as blockchain answers -32602 with <chain> is not allowed, and the supported-chain lists on the Advanced API pages and in the OpenAPI spec no longer include them.

A call that omits blockchain, or passes an empty array, queries every supported chain and needs no change.

Testnets and variants removed, the network stays​

NetworkRemovedStays
IoTeXtestnetmainnet
zkSync EraSepolia testnetmainnet
Gnosistestnet BeaconGnosis, Gnosis Beacon, Gnosis testnet JSON-RPC
0GGalileo testnet: EVM, Tendermint and BeaconKit0G mainnet EVM and mainnet BeaconKit
vFlowtestnet and Volta testnetmainnet
Dogecointestnetmainnet

Everything in the "stays" column keeps the same URL, the same plan, the same rate limits and the same method list.

Fuel: where to move​

Fuel operates public GraphQL endpoints for both networks, and they speak the same API as ours:

NetworkFuel endpoint
Mainnethttps://mainnet.fuel.network/v1/graphql
Sepolia testnethttps://testnet.fuel.network/v1/graphql

Every query and mutation that our Fuel pages documented works there unchanged, so the switch is the URL and nothing else. Their documentation covers the limits that apply.

Worth checking on your side​

  • Search your configuration for the endpoint path, not the network name. These are the eighteen strings: fuel, fuel_sepolia, xai, xai_testnet, syscoin, rollux, kusama, litecoin, tenet_evm, iotex_testnet, zksync_era_sepolia, gnosis_testnet_beacon, 0g_galileo_testnet_evm, 0g_galileo_testnet_tendermint, 0g_galileo_testnet_beaconkit, vflow_testnet, vflow_volta_testnet, dogecoin_testnet. They appear on rpc.ankr.com after /premium-http/ or on their own, and the older keyless form is /http/<name>.
  • Apart from vflow_volta_testnet, a call to any of these without a Premium key already fails. Since the 31 August tier change they answer HTTP 403 with -32052, and a few answer HTTP 200 carrying -32000 Unauthorized. An HTTP 200 that holds an error is the one worth grepping for, because a client that only checks the status code reads it as success.
  • Nothing else changes. Every other network keeps its endpoints, its plan, its rate limits and its method list, and no method moved between plans.

If one of these networks is part of how your product works, write to our Sales team at sales@ankr.com before the date and we will look at the options with you.