On July 22, 2017, at approximately 04:46:31 UTC at block height 477120 — BIP91 was activated on the Bitcoin network. As of this point, if the Segwit2x plan is successful, blocks that don’t signal Segregated Witness (BIP141) will be rejected.Segwit2x Progresses Forward
BIP91 has activated on the Bitcoin network after it was enforced by a collaborative effort of mining pools. Over the course of the past 24-hours, nearly every block on the network has been signaling for the protocol change. The threshold for Segwit activation is 80 percent of the network, and 88.2 percent has shown signaling support in the last 24 hours.
Mining pools showing BIP91/Segwit activation include:
BW Pool
Antpool
F2pool
Viabtc
Bixen
Canoe
Bitcoin.com
BTC.com
Telco214
BTCC
GBminers
Slush
BTC.top
Bitclub
Bitfury
https://news.bitcoin.com/bip91-activates-while-fork-still-looms-in-the-backdrop/