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Pulse — Sudden withdrawal event

ASNs whose active prefix count dropped by ≥50% in the last hour vs. the 1–7h baseline — outages, DDoS-blackhole, route leak fallout.

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What is Sudden withdrawal event?

A withdrawal event is when an origin AS stops announcing prefixes it was routing. We flag ASNs whose active-prefix count dropped by 50% or more in the last hour versus the 1–7h baseline, because large sudden withdrawals can indicate an outage, a fibre cut, a de-peering, or route-leak fallout.

Geographic distribution

Flagged events

Showing 200 most recent of 2,997 · last 24h
Most recent Sudden withdrawal event events detected across RIPE RIS collectors in the last 24 hours
When Severity Prefix AS
Aug 30, 12:09 UTC 70 * AS48326
Aug 30, 12:09 UTC 70 * AS47329
Aug 30, 12:09 UTC 70 * AS265279
Aug 30, 12:09 UTC 80 * AS9294
Aug 30, 12:09 UTC 70 * AS202632
Aug 30, 12:09 UTC 70 * AS197451
Aug 30, 12:09 UTC 80 * AS215721
Aug 30, 12:09 UTC 80 * AS267656
Aug 30, 12:09 UTC 80 * AS153391
Aug 30, 12:09 UTC 80 * AS2614
Aug 30, 12:09 UTC 70 * AS34772
Aug 30, 12:09 UTC 70 * AS327700
Aug 30, 12:09 UTC 70 * AS51013
Aug 30, 12:09 UTC 70 * AS327926
Aug 30, 12:09 UTC 70 * AS262428
Aug 30, 12:09 UTC 70 * AS263888
Aug 30, 12:09 UTC 70 * AS31490
Aug 30, 12:09 UTC 80 * AS215704
Aug 30, 12:09 UTC 80 * AS269655
Aug 30, 12:09 UTC 70 * AS394284
Aug 30, 12:09 UTC 80 * AS269229
Aug 30, 12:09 UTC 70 * AS201603
Aug 30, 12:09 UTC 80 * AS264592
Aug 30, 12:09 UTC 90 * AS41897
Aug 30, 12:09 UTC 80 * AS40994
Aug 30, 12:09 UTC 70 * AS262565
Aug 30, 12:09 UTC 70 * AS268323
Aug 30, 12:09 UTC 80 * AS49468
Aug 30, 12:09 UTC 70 * AS28227
Aug 30, 12:09 UTC 70 * AS15935
Aug 30, 12:09 UTC 80 * AS16220
Aug 30, 12:09 UTC 80 * AS9146
Aug 30, 12:09 UTC 70 * AS267575
Aug 30, 11:54 UTC 80 * AS267117
Aug 30, 11:54 UTC 70 * AS263263
Aug 30, 11:54 UTC 70 * AS28577
Aug 30, 11:54 UTC 80 * AS267348
Aug 30, 11:54 UTC 70 * AS267448
Aug 30, 11:54 UTC 80 * AS52861
Aug 30, 11:54 UTC 80 * AS266591
Aug 30, 11:54 UTC 70 * AS53007
Aug 30, 11:54 UTC 70 * AS266427
Aug 30, 11:54 UTC 80 * AS268280
Aug 30, 11:54 UTC 80 * AS263918
Aug 30, 11:54 UTC 80 * AS52962
Aug 30, 11:54 UTC 70 * AS264075
Aug 30, 11:54 UTC 80 * AS264332
Aug 30, 11:54 UTC 70 * AS53175
Aug 30, 11:54 UTC 80 * AS7821
Aug 30, 11:54 UTC 90 * AS28201
Aug 30, 11:54 UTC 80 * AS262349
Aug 30, 11:54 UTC 80 * AS53214
Aug 30, 11:54 UTC 80 * AS265027
Aug 30, 11:54 UTC 80 * AS138382
Aug 30, 11:54 UTC 70 * AS52947
Aug 30, 11:54 UTC 70 * AS30016
Aug 30, 11:54 UTC 80 * AS28140
Aug 30, 11:54 UTC 80 * AS262669
Aug 30, 11:54 UTC 70 * AS53072
Aug 30, 11:54 UTC 70 * AS11844
Aug 30, 11:54 UTC 80 * AS25892
Aug 30, 11:54 UTC 80 * AS266133
Aug 30, 11:54 UTC 80 * AS264235
Aug 30, 11:54 UTC 80 * AS271385
Aug 30, 11:54 UTC 70 * AS263574
Aug 30, 11:54 UTC 70 * AS60503
Aug 30, 11:54 UTC 70 * AS264524
Aug 30, 11:54 UTC 70 * AS265937
Aug 30, 11:54 UTC 70 * AS13786
Aug 30, 11:54 UTC 70 * AS262973
Aug 30, 11:54 UTC 80 * AS52977
Aug 30, 11:54 UTC 80 * AS267469
Aug 30, 11:54 UTC 70 * AS53094
Aug 30, 11:54 UTC 80 * AS271997
Aug 30, 11:54 UTC 70 * AS28634
Aug 30, 11:54 UTC 80 * AS28202
Aug 30, 11:54 UTC 80 * AS269018
Aug 30, 11:54 UTC 70 * AS28583
Aug 30, 11:54 UTC 70 * AS19723
Aug 30, 11:54 UTC 70 * AS267174
Aug 30, 11:54 UTC 70 * AS263035
Aug 30, 11:54 UTC 80 * AS28156
Aug 30, 11:54 UTC 80 * AS272228
Aug 30, 11:54 UTC 70 * AS265303
Aug 30, 11:54 UTC 70 * AS263608
Aug 30, 11:39 UTC 70 * AS44521
Aug 30, 11:39 UTC 80 * AS18801
Aug 30, 11:39 UTC 70 * AS27482
Aug 30, 11:39 UTC 70 * AS25273
Aug 30, 11:39 UTC 80 * AS147019
Aug 30, 11:39 UTC 80 * AS4249
Aug 30, 11:39 UTC 80 * AS134729
Aug 30, 11:39 UTC 70 * AS40026
Aug 30, 11:24 UTC 80 * AS24492
Aug 30, 11:24 UTC 70 * AS202105
Aug 30, 11:24 UTC 70 * AS138152
Aug 30, 11:24 UTC 80 * AS32524
Aug 30, 11:24 UTC 70 * AS33236
Aug 30, 11:24 UTC 70 * AS40861
Aug 30, 11:24 UTC 80 * AS55045
Aug 30, 11:24 UTC 70 * AS26881
Aug 30, 11:24 UTC 70 * AS23471
Aug 30, 11:24 UTC 70 * AS43338
Aug 30, 11:24 UTC 80 * AS41741
Aug 30, 11:24 UTC 70 * AS46378
Aug 30, 11:24 UTC 70 * AS9751
Aug 30, 11:24 UTC 70 * AS395479
Aug 30, 11:24 UTC 80 * AS137951
Aug 30, 11:24 UTC 70 * AS4818
Aug 30, 11:24 UTC 80 * AS14920
Aug 30, 11:24 UTC 70 * AS399646
Aug 30, 11:24 UTC 80 * AS36504
Aug 30, 11:09 UTC 80 * AS24530
Aug 30, 11:09 UTC 70 * AS150698
Aug 30, 11:09 UTC 70 * AS28327
Aug 30, 11:09 UTC 80 * AS12041
Aug 30, 11:09 UTC 80 * AS138462
Aug 30, 11:09 UTC 70 * AS8257
Aug 30, 11:09 UTC 70 * AS28178
Aug 30, 10:54 UTC 70 * AS61828
Aug 30, 10:54 UTC 80 * AS263781
Aug 30, 10:54 UTC 70 * AS269167
Aug 30, 10:54 UTC 70 * AS262290
Aug 30, 10:54 UTC 70 * AS44284
Aug 30, 10:54 UTC 70 * AS268311
Aug 30, 10:54 UTC 70 * AS28668
Aug 30, 10:54 UTC 70 * AS266081
Aug 30, 10:54 UTC 70 * AS12654
Aug 30, 10:54 UTC 80 * AS61684
Aug 30, 10:54 UTC 80 * AS266831
Aug 30, 10:54 UTC 80 * AS267717
Aug 30, 10:54 UTC 80 * AS269705
Aug 30, 10:54 UTC 80 * AS61704
Aug 30, 10:54 UTC 80 * AS264342
Aug 30, 10:54 UTC 70 * AS262412
Aug 30, 10:54 UTC 70 * AS34999
Aug 30, 10:54 UTC 80 * AS265394
Aug 30, 10:54 UTC 80 * AS264867
Aug 30, 10:54 UTC 80 * AS52528
Aug 30, 10:54 UTC 80 * AS264921
Aug 30, 10:54 UTC 80 * AS268818
Aug 30, 10:54 UTC 80 * AS271538
Aug 30, 10:54 UTC 80 * AS270884
Aug 30, 10:54 UTC 80 * AS269114
Aug 30, 10:54 UTC 80 * AS269329
Aug 30, 10:54 UTC 70 * AS262463
Aug 30, 10:54 UTC 70 * AS268829
Aug 30, 10:54 UTC 70 * AS53132
Aug 30, 10:54 UTC 80 * AS265267
Aug 30, 10:54 UTC 70 * AS264344
Aug 30, 10:54 UTC 80 * AS268397
Aug 30, 10:54 UTC 80 * AS265142
Aug 30, 10:39 UTC 70 * AS31747
Aug 30, 10:39 UTC 70 * AS8518
Aug 30, 10:39 UTC 70 * AS41362
Aug 30, 10:39 UTC 80 * AS16378
Aug 30, 10:39 UTC 70 * AS45644
Aug 30, 10:39 UTC 70 * AS133772
Aug 30, 10:39 UTC 80 * AS202161
Aug 30, 10:39 UTC 80 * AS26610
Aug 30, 10:39 UTC 80 * AS39370
Aug 30, 10:39 UTC 80 * AS43145
Aug 30, 10:39 UTC 70 * AS36905
Aug 30, 10:39 UTC 80 * AS24570
Aug 30, 10:24 UTC 70 * AS32829
Aug 30, 10:24 UTC 80 * AS13053
Aug 30, 10:24 UTC 80 * AS213382
Aug 30, 10:24 UTC 70 * AS32528
Aug 30, 10:24 UTC 70 * AS54623
Aug 30, 10:24 UTC 70 * AS11676
Aug 30, 10:09 UTC 70 * AS17411
Aug 30, 10:09 UTC 70 * AS203380
Aug 30, 10:09 UTC 70 * AS131464
Aug 30, 10:09 UTC 70 * AS36100
Aug 30, 10:09 UTC 70 * AS142403
Aug 30, 10:09 UTC 80 * AS197033
Aug 30, 10:09 UTC 70 * AS56246
Aug 30, 10:09 UTC 70 * AS37410
Aug 30, 10:09 UTC 70 * AS30536
Aug 30, 10:09 UTC 80 * AS56264
Aug 30, 10:09 UTC 80 * AS35830
Aug 30, 10:09 UTC 80 * AS23465
Aug 30, 10:09 UTC 80 * AS58717
Aug 30, 10:09 UTC 70 * AS40948
Aug 30, 10:09 UTC 70 * AS52129
Aug 30, 10:09 UTC 80 * AS48956
Aug 30, 10:09 UTC 70 * AS40232
Aug 30, 10:09 UTC 80 * AS264112
Aug 30, 10:09 UTC 80 * AS43641
Aug 30, 10:09 UTC 70 * AS401307
Aug 30, 10:09 UTC 90 * AS57344
Aug 30, 10:09 UTC 80 * AS23655
Aug 30, 10:09 UTC 70 * AS49770
Aug 30, 10:09 UTC 70 * AS23838
Aug 30, 10:09 UTC 80 * AS198798
Aug 30, 10:09 UTC 80 * AS28885
Aug 30, 10:09 UTC 80 * AS401476
Aug 30, 10:09 UTC 80 * AS24532
Aug 30, 10:09 UTC 80 * AS46208
Aug 30, 10:09 UTC 70 * AS33635

Frequently Asked Questions

What is a BGP Sudden withdrawal event?

A withdrawal event is when an origin AS stops announcing prefixes it was routing. We flag ASNs whose active-prefix count dropped by 50% or more in the last hour versus the 1–7h baseline, because large sudden withdrawals can indicate an outage, a fibre cut, a de-peering, or route-leak fallout.

Where does this data come from?

Every event is detected from live BGP updates collected across 23 RIPE RIS route collectors worldwide, ingested into a ClickHouse time-series store and re-evaluated every few minutes. No third-party feed is resold; the analysis is original to WorldIP.io.

How often is the Sudden withdrawal event feed updated?

The feed recomputes roughly every 5 minutes; it was last refreshed at 2026-08-30 12:15 UTC.

How do I subscribe to Sudden withdrawal event events?

Subscribe to the Atom feed at /pulse/bgp/withdrawal.atom or poll the JSON endpoint at /api/pulse/bgp/withdrawal.

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