Route changes on 2026-10-27

Changes found when comparing the global BGP routing table on 2026-10-27 (UTC): IP prefixes that moved to another ASN, were announced for the first time, gained an extra origin, or were withdrawn from the table.

Origin change: 122; That day · filtered
New announcement: 530; That day · filtered
Origin added: 42; That day · filtered
Withdrawal: 1,551; That day · filtered

Routing data · Nov 2, 2026, 04:24 UTC

WithdrawalClear filters

CountryIP versionASN

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
22:19	2602:ff03:584::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:55d::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:53a::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:35::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:356::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:337::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:32a::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:2c5::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:2a4::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:28c::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:19e::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2602:ff03:100::/48	Withdrawal	AS20473	The Constant Company	—	United States
22:19	2600:f0f0:c11a::/48	WithdrawalAnnounced again	AS16509	Amazon.com	—	United States
22:19	2600:f0f0:c119::/48	WithdrawalAnnounced again	AS16509	Amazon.com	—	United States
22:19	2400:cb00:c2f5::/48	WithdrawalAnnounced again	AS13335	Cloudflare	—	United States
22:19	2400:cb00:1494::/48	WithdrawalAnnounced again	AS13335	Cloudflare	—	United States
22:19	214.37.203.0/24	Withdrawal	AS1540	Headquarters, USAISC	—	United States
22:19	209.194.209.0/24	Withdrawal	AS19179	City of El Paso	—	United States
22:19	209.194.208.0/24	Withdrawal	AS19179	City of El Paso	—	United States
22:19	207.56.219.0/24	WithdrawalAnnounced again	AS54801	Zillion Network Inc.	—	United States
22:19	207.56.216.0/24	WithdrawalAnnounced again	AS54801	Zillion Network Inc.	—	United States
22:19	207.56.128.0/18	Withdrawal	AS54801	Zillion Network Inc.	—	United States
22:19	201.8.79.0/24	Withdrawal	AS401152	Ace Data Centers II	—	United States
22:19	201.8.78.0/24	Withdrawal	AS401152	Ace Data Centers II	—	United States
22:19	201.8.77.0/24	Withdrawal	AS401152	Ace Data Centers II	—	United States
22:19	201.8.76.0/24	Withdrawal	AS401152	Ace Data Centers II	—	United States
22:19	201.8.75.0/24	Withdrawal	AS401152	Ace Data Centers II	—	United States
22:19	201.8.74.0/24	WithdrawalAnnounced again	AS401152	Ace Data Centers II	—	United States
22:19	201.8.65.0/24	WithdrawalAnnounced again	AS401152	Ace Data Centers II	—	United States
22:19	2001:559:870d::/48	Withdrawal	AS33650	Comcast - Seattle	—	United States
22:19	198.169.237.0/24	WithdrawalAnnounced again	AS393316	Fusion Trading Solutions	—	United States
22:19	192.6.116.0/23	Withdrawal	AS402411	Aeryte	—	United States
22:19	192.255.94.0/24	Withdrawal	AS6461	Zayo	—	United States
22:19	179.236.135.0/24	Withdrawal	AS401152	Ace Data Centers II	—	United States
22:19	160.136.109.0/24	Withdrawal	AS1540	Headquarters, USAISC	—	United States
22:19	160.136.103.0/24	Withdrawal	AS1540	Headquarters, USAISC	—	United States
22:19	154.92.244.0/22	WithdrawalAnnounced again	AS9294	GNET INC.	—	United States
22:19	154.92.240.0/22	WithdrawalAnnounced again	AS9294	GNET INC.	—	United States
22:19	147.104.56.0/24	Withdrawal	AS1501	Headquarters, USAISC	—	United States
22:19	147.104.50.0/24	Withdrawal	AS1501	Headquarters, USAISC	—	United States
22:19	144.104.34.0/24	Withdrawal	AS1501	Headquarters, USAISC	—	United States
22:19	144.104.32.0/23	Withdrawal	AS1501	Headquarters, USAISC	—	United States
22:19	143.73.14.0/24	Withdrawal	AS1540	Headquarters, USAISC	—	United States
22:19	143.194.144.0/20	WithdrawalAnnounced again	AS1540	Headquarters, USAISC	—	United States
22:19	143.194.138.0/24	Withdrawal	AS1501	Headquarters, USAISC	—	United States
22:19	143.194.128.0/23	Withdrawal	AS1501	Headquarters, USAISC	—	United States
22:19	132.7.92.0/24	Withdrawal	AS56 AS399	United States Department of Defense (DoD)	—	United States
22:19	132.7.140.0/24	Withdrawal	AS399	Air Force Systems Networking	—	United States
18:22	91.103.124.0/22	Withdrawal	AS29802	Hivelocity LLC	—	United States
18:22	74.124.220.0/22	Withdrawal	AS46450	Pilot Fiber, Inc.	—	United States

By day

Origin change
New announcement
Origin added

Prefixes with a new ASN on each of the last 7 days, excluding withdrawals. Select a date to see all of that day’s changes. Another 450 changes are waiting for confirmation at the next comparison.

IP address ASN history

Enter an IP address or prefix to see which ASNs have announced the routes covering it.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.