72.192.0.0/11

Currently announced by AS22773 Cox Communications, in the routed prefix 72.192.0.0/11.

Current ASN: AS22773; Cox Communications
Routed prefix: 72.192.0.0/11; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: ARIN; United States · 72.192.0.0/11

Routing data · Oct 23, 2026, 06:22 UTC

ASN historyEvery routed prefix covering 72.192.0.0/11

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
72.192.0.0/11	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing

More specific routes1,172 total, showing the first 200

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
72.192.0.0/18	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.64.0/18	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.128.0/18	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.192.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.192.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.194.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.196.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.198.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.200.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.200.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.201.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.204.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.207.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.208.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.224.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.224.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.226.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.227.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.228.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.230.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.232.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.234.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.237.0/24	AS33396	GENERAL HEALTH SYSTEM	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.238.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.239.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.240.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.243.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.244.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.245.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.192.246.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.193.0.0/16	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.0.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.8.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.16.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.32.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.40.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.43.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.46.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.48.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.64.0/18	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.128.0/24	AS7954	Immense Networks	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.129.0/24	AS19697	Dupre Energy Services LLC	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.130.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.132.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.136.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.144.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.148.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.151.0/24	AS31803	Magellan Midstream Partners, L.P.	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.152.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.160.0/19	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.192.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.196.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.200.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.208.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.194.224.0/19	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.128.0/19	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.160.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.168.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.172.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.176.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.192.0/18	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.194.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.195.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.196.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.197.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.198.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.199.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.200.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.201.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.202.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.204.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.206.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.207.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.208.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.210.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.212.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.214.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.216.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.218.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.220.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.222.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.223.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.226.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.230.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.234.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.236.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.237.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.240.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.241.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.242.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.243.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.244.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.246.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.248.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.249.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.251.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.252.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.253.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.254.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.195.255.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.0.0/19	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.32.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.40.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.41.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.44.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.48.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.50.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.60.0/22	AS63182	RAPIDSCALE	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.64.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.80.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.84.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.88.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.96.0/19	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.112.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.114.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.116.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.118.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.120.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.122.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.124.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.126.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.128.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.144.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.160.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.164.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.168.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.176.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.180.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.184.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.196.192.0/18	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.197.0.0/16	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.0.0/17	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.128.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.136.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.140.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.144.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.160.0/20	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.176.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.184.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.192.0/19	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.240.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.198.248.0/21	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.199.0.0/16	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.0.0/18	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.64.0/18	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.64.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.65.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.66.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.68.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.71.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.72.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.74.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.75.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.76.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.78.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.80.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.82.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.83.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.84.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.87.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.88.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.90.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.92.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.93.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.96.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.100.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.101.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.104.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.106.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.109.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.112.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.114.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.116.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.118.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.120.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.122.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.124.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.126.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.128.0/18	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.192.0/19	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.224.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.228.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.234.0/24	AS395883	AEG	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.236.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.240.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.244.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.248.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.252.0/22	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.253.0/24	AS398010	MFCU	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.254.0/24	AS26008	Akamai Technologies, Inc.	United States	Before monitoring	2026-10-23 06:22	Announcing
72.200.255.0/24	AS26008	Akamai Technologies, Inc.	United States	Before monitoring	2026-10-23 06:22	Announcing
72.201.0.0/16	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.201.1.0/24	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.201.2.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.201.4.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.201.6.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.201.8.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.201.12.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.201.14.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing
72.201.16.0/23	AS22773	Cox Communications	United States	Before monitoring	2026-10-23 06:22	Announcing

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

Look up another address

RIR allocation record

Registry: ARIN
Allocated block: 72.192.0.0/11
Country: United States
Allocation date: 2005-08-03
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

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.