Route changes on 2026-11-04

Changes found when comparing the global BGP routing table on 2026-11-04 (UTC): IP prefixes that moved to another ASN, were announced for the first time, gained an extra origin, or were withdrawn from the table.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: 181; That day · filtered
New announcement: 591; That day · filtered
Origin added: 9; That day · filtered
Withdrawal: 1,690; That day · filtered

Routing data · Nov 8, 2026, 10:26 UTC

Prefixes with a new ASNClear filters

CountryIP versionASN

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
02:23	2.27.99.0/24	New announcement	AS401152	Ace Data Centers II	—	United States
02:23	2.26.186.0/24	Origin change	AS401152	Ace Data Centers II	AS218731	United States
02:23	2.23.192.0/20	New announcement	AS16625	Akamai Technologies, Inc.	—	United States
02:23	199.89.164.0/22	New announcement	AS10844	Vastnet Corp	—	United States
02:23	198.148.180.0/24	New announcement	AS19997	Penn National Insurance	—	United States
02:23	198.1.38.0/24	Origin change	AS11404	Wave Division Holdings	AS10835	United States
02:23	192.69.214.0/24	New announcement	AS18450	WebNX	—	United States
02:23	192.153.150.0/24	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	192.101.71.0/24	New announcement	AS6079	Astound	—	United States
02:23	192.100.70.0/24	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	179.254.131.0/24	New announcement	AS401152	Ace Data Centers II	—	United States
02:23	179.254.130.0/24	New announcement	AS401152	Ace Data Centers II	—	United States
02:23	179.254.129.0/24	New announcement	AS401152	Ace Data Centers II	—	United States
02:23	179.254.128.0/24	New announcement	AS401152	Ace Data Centers II	—	United States
02:23	176.223.181.0/24	New announcement	AS200598	lunarnaut	—	United States
02:23	170.62.129.0/24	New announcementNo longer announced	AS401152	Ace Data Centers II	—	United States
02:23	169.155.42.0/24	New announcement	AS401416	Aurascape, Inc.	—	United States
02:23	166.88.29.0/24	Origin change	AS18779	Energy Group Networks	AS401152	United States
02:23	164.169.80.0/20	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	162.210.128.0/24	New announcement	AS55064	Arista Networks	—	United States
02:23	160.140.117.0/24	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	160.140.112.0/22	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	158.9.101.0/24	New announcement	AS367	United States Department of Defense (DoD)	—	United States
02:23	158.9.100.0/23	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	158.20.69.0/24	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	158.20.241.0/24	New announcement	AS367	United States Department of Defense (DoD)	—	United States
02:23	158.20.224.0/21	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.216.0/22	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.214.0/24	New announcement	AS367	United States Department of Defense (DoD)	—	United States
02:23	158.20.210.0/23	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.208.0/23	New announcement	AS367	United States Department of Defense (DoD)	—	United States
02:23	158.20.206.0/23	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.204.0/23	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.202.0/23	New announcement	AS367	United States Department of Defense (DoD)	—	United States
02:23	158.20.201.0/24	New announcement	AS367	United States Department of Defense (DoD)	—	United States
02:23	158.20.200.0/24	New announcement	AS367	United States Department of Defense (DoD)	—	United States
02:23	158.20.20.0/24	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	158.20.184.0/21	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.144.0/22	New announcement	AS367	United States Department of Defense (DoD)	—	United States
02:23	158.20.140.0/22	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.136.0/22	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.132.0/22	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.128.0/22	New announcementNo longer announced	AS1540	Headquarters, USAISC	—	United States
02:23	158.20.128.0/17	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	158.20.124.0/22	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	155.29.250.0/24	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	155.29.139.0/24	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	155.29.138.0/24	Origin change	AS721	United States Department of Defense (DoD)	AS367	United States
02:23	155.29.136.0/23	Origin change	AS1540	Headquarters, USAISC	AS367	United States
02:23	155.29.130.0/23	Origin change	AS1540	Headquarters, USAISC	AS367	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 484 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.