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Prefix profile

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

131.153.166.0/23

Currently validIPv4

Origin ASNAS19181

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
131.153.166.0/23
Current status
Currently valid
Origin ASN
AS19181
First observed
8/29/2026, 03:40:09
Last observed
11/12/2026, 00:00:00
Peer45Visible peers
Collector1Collectors
Announcements11Last 7 days, hourly aggregate
Withdrawals0Last 7 days, hourly aggregate
Origin ASN1Observed ASNs

Current routes and paths

45 observed
PrefixOrigin ASNAS pathPath lengthPeerCollectorStatus
131.153.166.0/23AS19181202365 50673 137409 12189 1918155.255.90.109rrc00Currently valid
131.153.166.0/23AS1918150300 137409 12189 191814176.12.110.8rrc00Currently valid
131.153.166.0/23AS19181213241 137409 12189 19181489.42.52.8rrc00Currently valid
131.153.166.0/23AS1918137721 137409 12189 191814165.16.221.66rrc00Currently valid
131.153.166.0/23AS1918158057 34549 137409 12189 191815194.50.92.251rrc00Currently valid
131.153.166.0/23AS1918149134 53356 6939 12189 19181523.129.32.61rrc00Currently valid
131.153.166.0/23AS1918158057 174 12189 191814193.33.94.251rrc00Currently valid
131.153.166.0/23AS19181216285 8280 137409 12189 19181584.54.49.1rrc00Currently valid
131.153.166.0/23AS1918149673 20485 137409 12189 19181594.247.111.254rrc00Currently valid
131.153.166.0/23AS1918134549 137409 12189 19181480.77.16.114rrc00Currently valid
131.153.166.0/23AS1918161218 6939 12189 191814143.246.179.232rrc00Currently valid
131.153.166.0/23AS19181208972 137409 12189 19181445.12.55.0rrc00Currently valid
131.153.166.0/23AS19181132825 3356 12189 19181443.251.115.197rrc00Currently valid
131.153.166.0/23AS1918155720 2914 3356 12189 19181545.116.179.212rrc00Currently valid
131.153.166.0/23AS1918150304 137409 12189 19181431.169.49.228rrc00Currently valid
131.153.166.0/23AS191814608 137409 12189 191814203.119.104.1rrc00Currently valid
131.153.166.0/23AS1918137989 137409 12189 191814203.123.48.6rrc00Currently valid
131.153.166.0/23AS1918149432 48362 137409 12189 191815195.128.231.254rrc00Currently valid
131.153.166.0/23AS1918117639 137409 12189 191814202.69.160.152rrc00Currently valid
131.153.166.0/23AS1918138855 137409 12189 191814103.147.22.50rrc00Currently valid
131.153.166.0/23AS19181204092 137409 12189 19181489.234.186.6rrc00Currently valid
131.153.166.0/23AS1918157381 50304 137409 12189 191815193.150.22.240rrc00Currently valid
131.153.166.0/23AS19181852 12189 191813154.11.12.212rrc00Currently valid
131.153.166.0/23AS191813333 137409 12189 191814193.0.0.56rrc00Currently valid
131.153.166.0/23AS1918124482 12189 191813203.175.175.15rrc00Currently valid
131.153.166.0/23AS1918114907 137409 12189 191814208.80.153.193rrc00Currently valid
131.153.166.0/23AS1918138001 137409 12189 191814202.150.221.37rrc00Currently valid
131.153.166.0/23AS1918157821 12586 3257 137409 12189 191816193.160.39.1rrc00Currently valid
131.153.166.0/23AS1918159919 137409 12189 1918145.178.95.254rrc00Currently valid
131.153.166.0/23AS191811403 577 12189 191814198.58.198.252rrc00Currently valid
131.153.166.0/23AS1918144393 58057 6939 12189 19181549.12.70.222rrc00Currently valid
131.153.166.0/23AS191813549 3356 12189 191814208.51.134.248rrc00Currently valid
131.153.166.0/23AS1918145049 6696 137409 12189 191815194.28.97.2rrc00Currently valid
131.153.166.0/23AS19181328840 327727 174 12189 191815102.208.105.2rrc00Currently valid
131.153.166.0/23AS1918120205 6939 12189 19181464.246.96.5rrc00Currently valid
131.153.166.0/23AS1918113830 971 137409 12189 191815161.129.152.2rrc00Currently valid
131.153.166.0/23AS1918148185 137409 12189 191814195.90.96.2rrc00Currently valid
131.153.166.0/23AS1918120514 1299 174 12189 191815217.151.205.147rrc00Currently valid
131.153.166.0/23AS1918155720 6939 12189 191814103.212.68.10rrc00Currently valid
131.153.166.0/23AS1918134927 137409 12189 19181445.134.89.1rrc00Currently valid
131.153.166.0/23AS191817018 3356 12189 19181412.0.1.63rrc00Currently valid
131.153.166.0/23AS1918122652 137409 12189 19181445.61.0.85rrc00Currently valid
131.153.166.0/23AS1918129504 39392 33891 137409 12189 191816185.193.84.191rrc00Currently valid
131.153.166.0/23AS19181206499 34549 137409 12189 19181545.14.68.69rrc00Currently valid
131.153.166.0/23AS1918134927 1299 3356 12189 191815193.148.251.1rrc00Currently valid

Recent event window

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

Last observed
11/11/2026, 17:00:00
Peers in window
3
Collectors in window
1
Average path length
4.7
Longest path
5

Announcement / withdrawal history

Latest 30
TimeEventOrigin ASNAS pathPeerCollector
11/11/2026, 17:20:21AnnouncementAS1918158057 34549 137409 12189 19181194.50.92.251rrc00
11/11/2026, 17:20:21AnnouncementAS19181206499 34549 137409 12189 1918145.14.68.69rrc00
11/11/2026, 17:20:21AnnouncementAS1918134549 137409 12189 1918180.77.16.114rrc00
11/11/2026, 07:40:13AnnouncementAS1918149673 20485 137409 12189 1918194.247.111.254rrc00
11/11/2026, 05:25:27AnnouncementAS1918149673 20485 137409 12189 1918194.247.111.254rrc00
11/10/2026, 14:55:10AnnouncementAS191817018 3356 12189 1918112.0.1.63rrc00
11/10/2026, 10:50:01AnnouncementAS19181328840 327727 174 12189 19181102.208.105.2rrc00
11/10/2026, 06:55:20AnnouncementAS1918122652 174 12189 1918145.61.0.85rrc00
11/10/2026, 06:55:04AnnouncementAS1918122652 1299 174 12189 1918145.61.0.85rrc00
11/9/2026, 07:55:08AnnouncementAS1918157821 12586 3257 137409 12189 19181193.160.39.1rrc00
11/9/2026, 05:45:35AnnouncementAS191817018 3356 12189 1918112.0.1.63rrc00
11/8/2026, 06:25:06AnnouncementAS1918155720 2914 3356 12189 1918145.116.179.212rrc00
11/8/2026, 02:05:00AnnouncementAS1918137721 137409 12189 19181165.16.221.66rrc00
11/7/2026, 23:00:09AnnouncementAS1918137721 137409 12189 19181165.16.221.66rrc00
11/7/2026, 22:48:19AnnouncementAS1918137721 137409 12189 19181165.16.221.66rrc00
11/7/2026, 22:05:01AnnouncementAS1918155720 6939 12189 19181103.212.68.10rrc00
11/7/2026, 14:25:16AnnouncementAS19181328840 327727 174 12189 19181102.208.105.2rrc00
11/7/2026, 14:25:08Withdrawal——102.208.105.2rrc00
11/5/2026, 21:45:09AnnouncementAS19181204092 198978 174 12189 1918189.234.186.6rrc00
11/5/2026, 21:25:17AnnouncementAS19181208972 137409 12189 1918145.12.55.0rrc00
11/5/2026, 21:10:37Withdrawal——195.128.231.254rrc00
11/4/2026, 20:45:22AnnouncementAS19181206499 34549 137409 12189 1918145.14.68.69rrc00
11/4/2026, 16:15:32AnnouncementAS19181328840 327727 174 12189 19181102.208.105.2rrc00
11/4/2026, 16:15:23Withdrawal——102.208.105.2rrc00
11/3/2026, 05:45:16AnnouncementAS1918137721 137409 12189 19181165.16.221.66rrc00
11/3/2026, 04:00:17Withdrawal——102.208.105.2rrc00
11/3/2026, 02:10:32AnnouncementAS19181328840 327727 174 12189 19181102.208.105.2rrc00
11/3/2026, 02:10:22Withdrawal——102.208.105.2rrc00
11/2/2026, 13:25:11AnnouncementAS19181216285 8280 137409 12189 1918184.54.49.1rrc00
11/1/2026, 13:30:47AnnouncementAS19181206499 34549 137409 12189 1918145.14.68.69rrc00

Hourly changes

SEVEN-DAY WINDOW · 8 time points
TimeAnnouncementsWithdrawalsPeerCollectorOrigin ASNAS path
11/11/2026, 17:00:00303114.7 / 5
11/11/2026, 07:00:00101115.0 / 5
11/11/2026, 05:00:00101115.0 / 5
11/10/2026, 14:00:00101114.0 / 4
11/10/2026, 10:00:00101115.0 / 5
11/10/2026, 06:00:00201114.5 / 5
11/9/2026, 07:00:00101116.0 / 6
11/9/2026, 05:00:00101114.0 / 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