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Prefix profile

Review current routes, sources, visibility and BGP change evidence for a prefix.

131.161.4.0/22

Currently validIPv4

Origin ASNAS28201

This profile is based on CHA.LA's maintained BGP route state, hourly aggregates and event history; fields without observations are shown as not recorded.
Last observed11/12/2026, 00:00:00CHA.LA BGP data
View BGP historyRPKI checkRDAP registration
Prefix
131.161.4.0/22
Current status
Currently valid
Origin ASN
AS28201
First observed
8/28/2026, 19:40:13
Last observed
11/12/2026, 00:00:00
Peer45Visible peers
Collector1Collectors
Announcements4Last 7 days, hourly aggregate
Withdrawals0Last 7 days, hourly aggregate
Origin ASN1Observed ASNs

Current routes and paths

46 observed
PrefixOrigin ASNAS pathPath lengthPeerCollectorStatus
131.161.4.0/22AS2820134927 6939 52320 282014193.148.251.1rrc00Currently valid
131.161.4.0/22AS2820120205 6939 52320 28201464.246.96.5rrc00Currently valid
131.161.4.0/22AS282011403 6939 52320 282014198.58.198.252rrc00Currently valid
131.161.4.0/22AS2820150300 3356 282013176.12.110.8rrc00Currently valid
131.161.4.0/22AS2820134549 6461 52320 28201480.77.16.114rrc00Currently valid
131.161.4.0/22AS28201132825 174 52320 28201443.251.115.197rrc00Currently valid
131.161.4.0/22AS2820120514 1299 52320 282014217.151.205.147rrc00Currently valid
131.161.4.0/22AS2820137721 13786 282013165.16.221.66rrc00Currently valid
131.161.4.0/22AS2820150628 3356 282013178.208.11.4rrc00Currently valid
131.161.4.0/22AS2820149134 53356 6939 52320 28201523.129.32.61rrc00Currently valid
131.161.4.0/22AS2820155720 6939 52320 282014103.212.68.10rrc00Currently valid
131.161.4.0/22AS28201216285 8280 6762 13786 28201584.54.49.1rrc00Currently valid
131.161.4.0/22AS2820117639 3356 282013202.69.160.152rrc00Currently valid
131.161.4.0/22AS2820148185 6461 52320 282014195.90.96.2rrc00Currently valid
131.161.4.0/22AS2820129504 6939 52320 282014185.193.84.191rrc00Currently valid
131.161.4.0/22AS2820145049 6696 6939 52320 282015194.28.97.2rrc00Currently valid
131.161.4.0/22AS2820161218 6939 52320 282014143.246.179.232rrc00Currently valid
131.161.4.0/22AS28201208972 6939 52320 28201445.12.55.0rrc00Currently valid
131.161.4.0/22AS28201206499 6939 52320 28201445.14.68.69rrc00Currently valid
131.161.4.0/22AS28201202365 6939 52320 282014194.50.19.4rrc00Currently valid
131.161.4.0/22AS2820138001 9002 52320 282014202.150.221.37rrc00Currently valid
131.161.4.0/22AS28201204092 6939 52320 28201489.234.186.6rrc00Currently valid
131.161.4.0/22AS2820150304 6939 52320 28201431.169.49.228rrc00Currently valid
131.161.4.0/22AS28201202365 50673 174 52320 2820155.255.90.109rrc00Currently valid
131.161.4.0/22AS282017018 3356 28201312.0.1.63rrc00Currently valid
131.161.4.0/22AS2820137989 6939 52320 282014203.123.48.6rrc00Currently valid
131.161.4.0/22AS282014608 1221 4637 3356 282015203.119.104.1rrc00Currently valid
131.161.4.0/22AS2820114907 6939 52320 282014208.80.153.193rrc00Currently valid
131.161.4.0/22AS28201852 6939 52320 282014154.11.12.212rrc00Currently valid
131.161.4.0/22AS282013549 3356 282013208.51.134.248rrc00Currently valid
131.161.4.0/22AS28201328840 327727 174 52320 282015102.208.105.2rrc00Currently valid
131.161.4.0/22AS2820158057 6939 52320 282014194.50.92.251rrc00Currently valid
131.161.4.0/22AS2820149673 20485 1299 52320 28201594.247.111.254rrc00Currently valid
131.161.4.0/22AS2820157381 6939 52320 282014193.150.22.240rrc00Currently valid
131.161.4.0/22AS2820113830 971 3356 282014161.129.152.2rrc00Currently valid
131.161.4.0/22AS2820155720 2914 3356 28201445.116.179.212rrc00Currently valid
131.161.4.0/22AS2820134927 6939 52320 28201445.134.89.1rrc00Currently valid
131.161.4.0/22AS28201213241 9002 52320 28201489.42.52.8rrc00Currently valid
131.161.4.0/22AS2820159919 6939 52320 2820145.178.95.254rrc00Currently valid
131.161.4.0/22AS2820122652 6939 52320 28201445.61.0.85rrc00Currently valid
131.161.4.0/22AS282013333 3320 3356 282014193.0.0.56rrc00Currently valid
131.161.4.0/22AS2820157821 6939 52320 282014193.160.39.1rrc00Currently valid
131.161.4.0/22AS2820124482 282012203.175.175.15rrc00Currently valid
131.161.4.0/22AS2820158057 174 52320 282014193.33.94.251rrc00Currently valid
131.161.4.0/22AS2820144393 58057 6939 52320 28201549.12.70.222rrc00Currently valid
131.161.4.0/22—Not recorded—195.128.231.254rrc00Withdrawn

Recent event window

Only peers and collectors that produced events in this hour are counted.

Last observed
11/10/2026, 14:00:00
Peers in window
1
Collectors in window
1
Average path length
3.0
Longest path
3

Announcement / withdrawal history

Latest 30
TimeEventOrigin ASNAS pathPeerCollector
11/10/2026, 14:55:09AnnouncementAS282017018 3356 2820112.0.1.63rrc00
11/10/2026, 12:55:17AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/10/2026, 07:55:36AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/10/2026, 00:10:09AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/9/2026, 23:50:25AnnouncementAS28201208972 6939 52320 2820145.12.55.0rrc00
11/9/2026, 03:00:07AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/8/2026, 01:55:20AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/7/2026, 14:25:17AnnouncementAS28201328840 327727 174 52320 28201102.208.105.2rrc00
11/7/2026, 14:25:08Withdrawal——102.208.105.2rrc00
11/7/2026, 01:55:26AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/6/2026, 16:55:49Withdrawal——178.208.11.4rrc00
11/6/2026, 16:55:36AnnouncementAS2820117639 9304 52320 28201202.69.160.152rrc00
11/6/2026, 16:55:34AnnouncementAS2820155720 2914 3356 2820145.116.179.212rrc00
11/6/2026, 16:55:27AnnouncementAS282017018 3356 2820112.0.1.63rrc00
11/6/2026, 16:55:25AnnouncementAS282017018 3356 2820112.0.1.63rrc00
11/6/2026, 16:55:22AnnouncementAS2820113830 971 3356 13786 28201161.129.152.2rrc00
11/6/2026, 02:40:05AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/5/2026, 21:10:37Withdrawal——195.128.231.254rrc00
11/4/2026, 20:45:20AnnouncementAS28201206499 6939 52320 2820145.14.68.69rrc00
11/4/2026, 16:15:32AnnouncementAS28201328840 327727 174 52320 28201102.208.105.2rrc00
11/4/2026, 16:15:23Withdrawal——102.208.105.2rrc00
11/4/2026, 05:20:32AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/4/2026, 01:05:39AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/3/2026, 22:35:06AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/3/2026, 20:30:49AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/3/2026, 14:20:22AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00
11/3/2026, 04:00:17Withdrawal——102.208.105.2rrc00
11/3/2026, 02:10:33AnnouncementAS28201328840 327727 174 52320 28201102.208.105.2rrc00
11/3/2026, 02:10:22Withdrawal——102.208.105.2rrc00
11/2/2026, 07:30:16AnnouncementAS28201202365 6939 52320 28201194.50.19.4rrc00

Hourly changes

SEVEN-DAY WINDOW · 4 time points
TimeAnnouncementsWithdrawalsPeerCollectorOrigin ASNAS path
11/10/2026, 14:00:00101113.0 / 3
11/10/2026, 12:00:00101114.0 / 4
11/10/2026, 07:00:00101114.0 / 4
11/9/2026, 23:00:00101114.0 / 4
CHA.LA BGP profileThis page shows collected RIPE RIS route state, hourly aggregates and announcement / withdrawal events. Origin ASNs, peers and collectors represent an observation view, not the complete global routing table.Data source: CHA.LA BGP data · Query window: last 7 days