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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 2,892 · last 24h
Most recent Sudden withdrawal event events detected across RIPE RIS collectors in the last 24 hours
When Severity Prefix AS
Aug 30, 05:09 UTC 70 * AS11183
Aug 30, 05:09 UTC 70 * AS8518
Aug 30, 05:09 UTC 70 * AS40026
Aug 30, 05:09 UTC 80 * AS16378
Aug 30, 05:09 UTC 80 * AS36225
Aug 30, 05:09 UTC 80 * AS205490
Aug 30, 05:09 UTC 80 * AS55045
Aug 30, 05:09 UTC 80 * AS17040
Aug 30, 05:09 UTC 80 * AS4249
Aug 30, 05:09 UTC 70 * AS201603
Aug 30, 05:09 UTC 70 * AS27482
Aug 30, 05:09 UTC 70 * AS49823
Aug 30, 05:09 UTC 70 * AS133772
Aug 30, 05:09 UTC 80 * AS7821
Aug 30, 05:09 UTC 80 * AS24570
Aug 30, 05:09 UTC 70 * AS210258
Aug 30, 05:09 UTC 80 * AS134729
Aug 30, 05:09 UTC 70 * AS40861
Aug 30, 05:09 UTC 70 * AS53167
Aug 30, 05:09 UTC 80 * AS39370
Aug 30, 05:09 UTC 70 * AS61373
Aug 30, 05:09 UTC 70 * AS37199
Aug 30, 05:09 UTC 70 * AS41362
Aug 30, 05:09 UTC 70 * AS40564
Aug 30, 05:09 UTC 70 * AS262428
Aug 30, 05:09 UTC 70 * AS43338
Aug 30, 05:09 UTC 70 * AS25273
Aug 30, 05:09 UTC 80 * AS41741
Aug 30, 05:09 UTC 80 * AS18801
Aug 30, 05:09 UTC 70 * AS31747
Aug 30, 05:09 UTC 70 * AS48326
Aug 30, 05:09 UTC 70 * AS55189
Aug 30, 05:09 UTC 70 * AS399646
Aug 30, 05:09 UTC 80 * AS213382
Aug 30, 05:09 UTC 80 * AS202161
Aug 30, 05:09 UTC 80 * AS395246
Aug 30, 05:09 UTC 70 * AS9751
Aug 30, 05:09 UTC 80 * AS54706
Aug 30, 05:09 UTC 80 * AS24492
Aug 30, 05:09 UTC 70 * AS327926
Aug 30, 05:09 UTC 70 * AS45644
Aug 30, 05:09 UTC 80 * AS215721
Aug 30, 05:09 UTC 80 * AS264592
Aug 30, 05:09 UTC 70 * AS36874
Aug 30, 05:09 UTC 70 * AS23471
Aug 30, 05:09 UTC 90 * AS58495
Aug 30, 05:09 UTC 70 * AS11700
Aug 30, 05:09 UTC 70 * AS327700
Aug 30, 05:09 UTC 70 * AS16908
Aug 30, 05:09 UTC 70 * AS44521
Aug 30, 05:09 UTC 70 * AS328638
Aug 30, 05:09 UTC 80 * AS147019
Aug 30, 05:09 UTC 70 * AS31490
Aug 30, 05:09 UTC 80 * AS40727
Aug 30, 05:09 UTC 70 * AS998
Aug 30, 05:09 UTC 70 * AS33236
Aug 30, 05:09 UTC 70 * AS263390
Aug 30, 04:53 UTC 70 * AS53132
Aug 30, 04:53 UTC 70 * AS53175
Aug 30, 04:53 UTC 70 * AS263608
Aug 30, 04:53 UTC 80 * AS266591
Aug 30, 04:53 UTC 80 * AS394541
Aug 30, 04:53 UTC 70 * AS28668
Aug 30, 04:53 UTC 70 * AS4802
Aug 30, 04:53 UTC 70 * AS263574
Aug 30, 04:53 UTC 80 * AS268818
Aug 30, 04:53 UTC 70 * AS264524
Aug 30, 04:53 UTC 70 * AS265279
Aug 30, 04:53 UTC 80 * AS52861
Aug 30, 04:53 UTC 70 * AS395479
Aug 30, 04:53 UTC 70 * AS262290
Aug 30, 04:53 UTC 80 * AS264235
Aug 30, 04:53 UTC 80 * AS269114
Aug 30, 04:53 UTC 70 * AS262565
Aug 30, 04:53 UTC 80 * AS270884
Aug 30, 04:53 UTC 80 * AS272228
Aug 30, 04:53 UTC 80 * AS61684
Aug 30, 04:53 UTC 80 * AS267717
Aug 30, 04:53 UTC 80 * AS271997
Aug 30, 04:53 UTC 70 * AS266081
Aug 30, 04:53 UTC 70 * AS58789
Aug 30, 04:53 UTC 80 * AS46414
Aug 30, 04:53 UTC 70 * AS18018
Aug 30, 04:53 UTC 80 * AS263918
Aug 30, 04:53 UTC 70 * AS263035
Aug 30, 04:53 UTC 80 * AS4739
Aug 30, 04:53 UTC 80 * AS32524
Aug 30, 04:53 UTC 80 * AS138559
Aug 30, 04:53 UTC 80 * AS61704
Aug 30, 04:53 UTC 70 * AS267174
Aug 30, 04:53 UTC 70 * AS269167
Aug 30, 04:53 UTC 80 * AS264342
Aug 30, 04:53 UTC 80 * AS52977
Aug 30, 04:53 UTC 80 * AS264867
Aug 30, 04:53 UTC 70 * AS53094
Aug 30, 04:53 UTC 80 * AS14920
Aug 30, 04:53 UTC 70 * AS268311
Aug 30, 04:53 UTC 70 * AS262412
Aug 30, 04:53 UTC 70 * AS265303
Aug 30, 04:53 UTC 80 * AS268280
Aug 30, 04:53 UTC 80 * AS266831
Aug 30, 04:53 UTC 70 * AS11676
Aug 30, 04:53 UTC 80 * AS269018
Aug 30, 04:53 UTC 80 * AS269705
Aug 30, 04:53 UTC 70 * AS268829
Aug 30, 04:53 UTC 80 * AS265267
Aug 30, 04:53 UTC 70 * AS138152
Aug 30, 04:53 UTC 70 * AS40631
Aug 30, 04:53 UTC 80 * AS262349
Aug 30, 04:53 UTC 70 * AS61828
Aug 30, 04:53 UTC 80 * AS267348
Aug 30, 04:53 UTC 70 * AS267575
Aug 30, 04:53 UTC 70 * AS26881
Aug 30, 04:53 UTC 70 * AS30016
Aug 30, 04:53 UTC 80 * AS262669
Aug 30, 04:53 UTC 80 * AS269655
Aug 30, 04:53 UTC 70 * AS60503
Aug 30, 04:53 UTC 80 * AS268397
Aug 30, 04:53 UTC 70 * AS28227
Aug 30, 04:53 UTC 70 * AS266427
Aug 30, 04:53 UTC 80 * AS265142
Aug 30, 04:53 UTC 70 * AS15171
Aug 30, 04:53 UTC 80 * AS267117
Aug 30, 04:53 UTC 80 * AS393526
Aug 30, 04:53 UTC 70 * AS397735
Aug 30, 04:53 UTC 80 * AS52528
Aug 30, 04:53 UTC 80 * AS266133
Aug 30, 04:53 UTC 70 * AS52947
Aug 30, 04:53 UTC 70 * AS262463
Aug 30, 04:53 UTC 80 * AS12041
Aug 30, 04:53 UTC 80 * AS264921
Aug 30, 04:53 UTC 70 * AS328271
Aug 30, 04:53 UTC 70 * AS265937
Aug 30, 04:53 UTC 80 * AS269329
Aug 30, 04:53 UTC 80 * AS265027
Aug 30, 04:53 UTC 80 * AS52962
Aug 30, 04:53 UTC 80 * AS36504
Aug 30, 04:53 UTC 80 * AS28202
Aug 30, 04:53 UTC 80 * AS264332
Aug 30, 04:53 UTC 80 * AS271538
Aug 30, 04:53 UTC 80 * AS131232
Aug 30, 04:53 UTC 80 * AS394284
Aug 30, 04:53 UTC 70 * AS263263
Aug 30, 04:53 UTC 90 * AS28201
Aug 30, 04:53 UTC 80 * AS265394
Aug 30, 04:53 UTC 70 * AS263888
Aug 30, 04:53 UTC 70 * AS30021
Aug 30, 04:53 UTC 80 * AS63168
Aug 30, 04:39 UTC 80 * AS267224
Aug 30, 04:39 UTC 80 * AS262879
Aug 30, 04:39 UTC 70 * AS4818
Aug 30, 04:23 UTC 70 * AS265175
Aug 30, 04:23 UTC 70 * AS50597
Aug 30, 04:23 UTC 70 * AS53209
Aug 30, 04:23 UTC 80 * AS269785
Aug 30, 04:23 UTC 70 * AS46378
Aug 30, 04:23 UTC 70 * AS61817
Aug 30, 04:09 UTC 80 * AS211908
Aug 30, 04:09 UTC 80 * AS3194
Aug 30, 04:09 UTC 80 * AS205800
Aug 30, 04:09 UTC 80 * AS201749
Aug 30, 04:09 UTC 70 * AS138505
Aug 30, 04:09 UTC 80 * AS137951
Aug 30, 04:09 UTC 80 * AS210402
Aug 30, 04:09 UTC 80 * AS57324
Aug 30, 04:09 UTC 70 * AS60815
Aug 30, 04:09 UTC 80 * AS265257
Aug 30, 04:09 UTC 80 * AS198735
Aug 30, 04:09 UTC 80 * AS210016
Aug 30, 04:09 UTC 80 * AS198589
Aug 30, 04:09 UTC 80 * AS25892
Aug 30, 04:09 UTC 80 * AS208365
Aug 30, 04:09 UTC 80 * AS205906
Aug 30, 04:09 UTC 80 * AS212330
Aug 30, 04:09 UTC 80 * AS210022
Aug 30, 04:09 UTC 80 * AS153391
Aug 30, 04:09 UTC 80 * AS51020
Aug 30, 04:09 UTC 80 * AS203214
Aug 30, 04:09 UTC 80 * AS208324
Aug 30, 04:09 UTC 80 * AS197421
Aug 30, 04:09 UTC 80 * AS202651
Aug 30, 04:09 UTC 90 * AS199739
Aug 30, 04:09 UTC 70 * AS205889
Aug 30, 04:09 UTC 80 * AS209193
Aug 30, 04:09 UTC 70 * AS32829
Aug 30, 04:09 UTC 70 * AS211970
Aug 30, 03:54 UTC 80 * AS47939
Aug 30, 03:54 UTC 70 * AS264344
Aug 30, 03:54 UTC 70 * AS134806
Aug 30, 03:54 UTC 80 * AS200200
Aug 30, 03:54 UTC 90 * AS1916
Aug 30, 03:54 UTC 80 * AS207266
Aug 30, 03:54 UTC 70 * AS268323
Aug 30, 03:54 UTC 70 * AS52752
Aug 30, 03:54 UTC 70 * AS28577
Aug 30, 03:54 UTC 70 * AS45925
Aug 30, 03:54 UTC 90 * AS45588
Aug 30, 03:54 UTC 70 * AS38067
Aug 30, 03:54 UTC 70 * AS28634
Aug 30, 03:39 UTC 70 * AS265041

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 05:15 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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