# Istanbul Tracker tracker ## Trackers - [Geth](https://github.com/ethereum/go-ethereum/issues/19919) - [Aleth](https://github.com/ethereum/aleth/issues/5716) - [Parity](https://github.com/paritytech/parity-ethereum/issues/10770) - [Besu (formerly Pantheon)](https://pegasys1.atlassian.net/browse/PAN-2756) - [Trinity](https://github.com/ethereum/py-evm/milestone/11) - [Nethermind](https://github.com/NethermindEth/nethermind/issues/771) ## Per EIP status | EIP | Geth | Aleth | Parity | Besu (formerly Pantheon) | [Trinity](https://github.com/ethereum/py-evm/milestone/11) | Nethermind| |-----|------|-------|--------|------------|-------|----------| | [152](https://github.com/ethereum/EIPs/pull/2129) (Blake F)| [Merged](https://github.com/ethereum/go-ethereum/pull/19972) | N/A| [Merged](https://github.com/paritytech/parity-ethereum/pull/11017)| [Merged](https://github.com/PegaSysEng/pantheon/pull/1614) + [Merged](https://github.com/PegaSysEng/pantheon/pull/1862)| [Merged](https://github.com/ethereum/py-evm/pull/1835)+ [Issue](https://github.com/ethereum/py-evm/issues/1836)| [Merged](https://github.com/NethermindEth/nethermind/pull/839)| | [1108](https://eips.ethereum.org/EIPS/eip-1108) (alt_bn128 reduction)| [Merged](https://github.com/ethereum/go-ethereum/pull/19904)| [Merged](https://github.com/ethereum/aleth/pull/5705) | [Merged](https://github.com/paritytech/parity-ethereum/pull/11008)| [Merged](https://github.com/PegaSysEng/pantheon/pull/1704)| [Merged](https://github.com/ethereum/py-evm/pull/1828)| [Merged](https://github.com/NethermindEth/nethermind/pull/819) | | [1344](https://eips.ethereum.org/EIPS/eip-1344) (Chain id)| [Merged](https://github.com/ethereum/go-ethereum/pull/19921)| [Merged](https://github.com/ethereum/aleth/pull/5696)| [Merged](https://github.com/paritytech/parity-ethereum/pull/10983)| [Merged](https://github.com/PegaSysEng/pantheon/pull/1690)| [Merged](https://github.com/ethereum/py-evm/pull/1803)| [Merged](https://github.com/NethermindEth/nethermind/pull/715)| N/A | [1884](https://eips.ethereum.org/EIPS/eip-1884) (Repricing SLOAD et al)| [Merged](https://github.com/ethereum/go-ethereum/pull/19743) | [Merged](https://github.com/ethereum/aleth/pull/5700)| [Merged](https://github.com/paritytech/parity-ethereum/pull/10992) | [Merged](https://github.com/PegaSysEng/pantheon/pull/1795)| [Merged](https://github.com/ethereum/py-evm/pull/1829)| [Merged](https://github.com/NethermindEth/nethermind/pull/823) | [2028](https://eips.ethereum.org/EIPS/eip-2028) (Calldata gc reduction)| [Merged](https://github.com/ethereum/go-ethereum/pull/19931)| [Merged](https://github.com/ethereum/aleth/pull/5691) | [Merged](https://github.com/paritytech/parity-ethereum/pull/10987) | [Merged](https://github.com/PegaSysEng/pantheon/pull/1739)| [Merged](https://github.com/ethereum/py-evm/pull/1832) | [Merged](https://github.com/NethermindEth/nethermind/pull/811)| | [2200](https://github.com/ethereum/EIPs/pull/2200) (Net-metered SSTORE)| [Merged](https://github.com/ethereum/go-ethereum/pull/19964) | [Open](https://github.com/ethereum/aleth/pull/5709)| [Merged](https://github.com/paritytech/parity-ethereum/pull/10191)| [Merged](https://github.com/PegaSysEng/pantheon/pull/1743) + [Merged](https://github.com/PegaSysEng/pantheon/pull/1706)| [Merged](https://github.com/ethereum/py-evm/pull/1831)+ [Merged](https://github.com/ethereum/py-evm/pull/1834) | [Merged](https://github.com/NethermindEth/nethermind/pull/820) |Genesis activation support| [Merged](https://github.com/ethereum/go-ethereum/pull/19993)| N/A| N/A| [Merged](https://github.com/PegaSysEng/pantheon/pull/1865) and [Merged](https://github.com/PegaSysEng/pantheon/pull/1604) | N/A | N/A |Activation delay switch| [Merged](https://github.com/ethereum/go-ethereum/pull/20004)| N/A| N/A| [Merged](https://github.com/PegaSysEng/pantheon/pull/1915) | N/A | N/A Ping @holiman for corrections and updates