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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Events last 24h

2,943

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Aug 22, 06:12 UTC

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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 2,943 · last 24h

Most recent Sudden withdrawal event events detected across RIPE RIS collectors in the last 24 hours
When	Severity	Prefix	AS	Drop
Aug 22, 06:12 UTC	80	*	AS55045	92.9% (13 lost)
Aug 22, 06:12 UTC	80	*	AS32524	89.7% (61 lost)
Aug 22, 06:12 UTC	80	*	AS148990	100.0% (12 lost)
Aug 22, 06:12 UTC	80	*	AS7821	100.0% (17 lost)
Aug 22, 06:12 UTC	70	*	AS262565	50.0% (6 lost)
Aug 22, 06:12 UTC	70	*	AS23471	71.4% (5 lost)
Aug 22, 06:12 UTC	80	*	AS17040	100.0% (6 lost)
Aug 22, 06:12 UTC	70	*	AS17983	31.8% (7 lost)
Aug 22, 06:12 UTC	80	*	AS394541	100.0% (8 lost)
Aug 22, 06:12 UTC	70	*	AS267013	71.4% (5 lost)
Aug 22, 06:12 UTC	70	*	AS43142	50.0% (7 lost)
Aug 22, 06:12 UTC	80	*	AS40727	100.0% (12 lost)
Aug 22, 06:12 UTC	70	*	AS399646	50.0% (15 lost)
Aug 22, 06:12 UTC	70	*	AS54723	30.0% (6 lost)
Aug 22, 06:12 UTC	70	*	AS11700	53.8% (7 lost)
Aug 22, 06:12 UTC	80	*	AS267320	85.7% (6 lost)
Aug 22, 06:12 UTC	70	*	AS265279	57.1% (12 lost)
Aug 22, 06:12 UTC	80	*	AS395246	100.0% (19 lost)
Aug 22, 06:12 UTC	80	*	AS264592	85.7% (6 lost)
Aug 22, 06:12 UTC	70	*	AS16908	58.3% (7 lost)
Aug 22, 06:12 UTC	80	*	AS135478	30.4% (35 lost)
Aug 22, 06:12 UTC	70	*	AS6109	63.6% (14 lost)
Aug 22, 06:12 UTC	70	*	AS28227	52.2% (12 lost)
Aug 22, 06:12 UTC	70	*	AS327700	37.3% (19 lost)
Aug 22, 06:12 UTC	70	*	AS55361	56.8% (21 lost)
Aug 22, 06:12 UTC	70	*	AS33236	50.0% (5 lost)
Aug 22, 06:12 UTC	70	*	AS9435	70.0% (14 lost)
Aug 22, 06:12 UTC	80	*	AS148987	100.0% (8 lost)
Aug 22, 06:12 UTC	70	*	AS136210	62.5% (5 lost)
Aug 22, 06:12 UTC	70	*	AS328200	34.3% (12 lost)
Aug 22, 06:12 UTC	70	*	AS201603	60.0% (6 lost)
Aug 22, 06:12 UTC	70	*	AS59116	41.7% (5 lost)
Aug 22, 06:12 UTC	70	*	AS46378	45.5% (10 lost)
Aug 22, 06:12 UTC	70	*	AS48326	38.5% (5 lost)
Aug 22, 06:12 UTC	70	*	AS134729	33.3% (24 lost)
Aug 22, 06:12 UTC	70	*	AS395479	37.5% (6 lost)
Aug 22, 06:12 UTC	80	*	AS266268	85.7% (6 lost)
Aug 22, 06:12 UTC	80	*	AS4787	48.7% (211 lost)
Aug 22, 06:12 UTC	80	*	AS46414	87.5% (14 lost)
Aug 22, 06:12 UTC	70	*	AS55189	55.6% (5 lost)
Aug 22, 06:12 UTC	70	*	AS397735	70.6% (12 lost)
Aug 22, 06:12 UTC	70	*	AS30021	75.0% (9 lost)
Aug 22, 06:12 UTC	70	*	AS263888	57.1% (8 lost)
Aug 22, 06:12 UTC	70	*	AS147060	62.5% (10 lost)
Aug 22, 06:12 UTC	80	*	AS36504	100.0% (9 lost)
Aug 22, 05:57 UTC	80	*	AS138559	100.0% (6 lost)
Aug 22, 05:57 UTC	80	*	AS16378	94.1% (16 lost)
Aug 22, 05:57 UTC	70	*	AS11676	33.3% (15 lost)
Aug 22, 05:57 UTC	80	*	AS202161	100.0% (14 lost)
Aug 22, 05:57 UTC	80	*	AS21899	83.3% (5 lost)
Aug 22, 05:57 UTC	70	*	AS4818	53.8% (7 lost)
Aug 22, 05:57 UTC	80	*	AS131232	100.0% (5 lost)
Aug 22, 05:57 UTC	70	*	AS44521	57.1% (8 lost)
Aug 22, 05:57 UTC	70	*	AS40026	50.0% (5 lost)
Aug 22, 05:57 UTC	80	*	AS329600	100.0% (5 lost)
Aug 22, 05:57 UTC	80	*	AS39370	90.0% (9 lost)
Aug 22, 05:57 UTC	80	*	AS14920	100.0% (11 lost)
Aug 22, 05:57 UTC	80	*	AS19178	87.5% (7 lost)
Aug 22, 05:57 UTC	70	*	AS17371	41.7% (5 lost)
Aug 22, 05:57 UTC	70	*	AS31747	34.6% (9 lost)
Aug 22, 05:57 UTC	70	*	AS133772	44.4% (24 lost)
Aug 22, 05:57 UTC	70	*	AS41362	61.5% (8 lost)
Aug 22, 05:57 UTC	80	*	AS61149	83.3% (5 lost)
Aug 22, 05:57 UTC	70	*	AS135348	50.0% (5 lost)
Aug 22, 05:57 UTC	80	*	AS137951	39.4% (56 lost)
Aug 22, 05:57 UTC	70	*	AS9751	47.4% (9 lost)
Aug 22, 05:57 UTC	70	*	AS24651	45.9% (17 lost)
Aug 22, 05:57 UTC	70	*	AS15160	55.0% (11 lost)
Aug 22, 05:57 UTC	80	*	AS63168	100.0% (5 lost)
Aug 22, 05:57 UTC	70	*	AS58789	80.0% (8 lost)
Aug 22, 05:57 UTC	80	*	AS36225	100.0% (6 lost)
Aug 22, 05:57 UTC	70	*	AS14822	71.4% (5 lost)
Aug 22, 05:57 UTC	80	*	AS27759	35.2% (57 lost)
Aug 22, 05:57 UTC	80	*	AS24570	100.0% (6 lost)
Aug 22, 05:57 UTC	70	*	AS138152	36.4% (16 lost)
Aug 22, 05:57 UTC	80	*	AS147019	80.8% (42 lost)
Aug 22, 05:57 UTC	70	*	AS3911	51.6% (16 lost)
Aug 22, 05:57 UTC	70	*	AS36898	61.5% (16 lost)
Aug 22, 05:42 UTC	70	*	AS28327	65.7% (23 lost)
Aug 22, 05:42 UTC	80	*	AS328984	100.0% (5 lost)
Aug 22, 05:42 UTC	80	*	AS270037	100.0% (6 lost)
Aug 22, 05:42 UTC	70	*	AS51500	47.8% (11 lost)
Aug 22, 05:42 UTC	70	*	AS32528	46.9% (15 lost)
Aug 22, 05:42 UTC	70	*	AS18018	54.5% (12 lost)
Aug 22, 05:42 UTC	70	*	AS134325	80.0% (16 lost)
Aug 22, 05:42 UTC	70	*	AS28178	72.7% (16 lost)
Aug 22, 05:27 UTC	70	*	AS4546	48.9% (22 lost)
Aug 22, 05:27 UTC	80	*	AS4249	39.6% (95 lost)
Aug 22, 05:27 UTC	70	*	AS262519	66.7% (20 lost)
Aug 22, 05:27 UTC	70	*	AS45644	53.8% (7 lost)
Aug 22, 05:27 UTC	70	*	AS18434	44.2% (42 lost)
Aug 22, 05:27 UTC	70	*	AS39960	33.3% (10 lost)
Aug 22, 05:27 UTC	70	*	AS137448	50.0% (5 lost)
Aug 22, 05:27 UTC	80	*	AS18801	85.7% (6 lost)
Aug 22, 05:27 UTC	80	*	AS197039	81.8% (18 lost)
Aug 22, 05:27 UTC	70	*	AS27482	41.2% (14 lost)
Aug 22, 05:12 UTC	70	*	AS6303	31.1% (14 lost)
Aug 22, 05:12 UTC	70	*	AS54706	78.1% (25 lost)
Aug 22, 05:12 UTC	80	*	AS29982	100.0% (5 lost)
Aug 22, 05:12 UTC	70	*	AS48075	41.2% (7 lost)
Aug 22, 05:12 UTC	70	*	AS17380	68.8% (22 lost)
Aug 22, 05:12 UTC	70	*	AS395198	40.0% (8 lost)
Aug 22, 04:57 UTC	70	*	AS26881	46.7% (7 lost)
Aug 22, 04:57 UTC	80	*	AS395344	91.7% (11 lost)
Aug 22, 04:57 UTC	70	*	AS25655	41.7% (5 lost)
Aug 22, 04:57 UTC	70	*	AS25222	40.7% (11 lost)
Aug 22, 04:57 UTC	80	*	AS133354	100.0% (6 lost)
Aug 22, 04:57 UTC	70	*	AS11183	33.3% (7 lost)
Aug 22, 04:57 UTC	70	*	AS9785	35.3% (6 lost)
Aug 22, 04:57 UTC	80	*	AS267076	85.7% (6 lost)
Aug 22, 04:57 UTC	70	*	AS1101	52.9% (9 lost)
Aug 22, 04:42 UTC	80	*	AS137404	100.0% (5 lost)
Aug 22, 04:27 UTC	80	*	AS270468	100.0% (5 lost)
Aug 22, 04:27 UTC	70	*	AS58057	46.2% (6 lost)
Aug 22, 04:27 UTC	80	*	AS50818	100.0% (8 lost)
Aug 22, 04:12 UTC	70	*	AS38426	60.0% (6 lost)
Aug 22, 04:12 UTC	70	*	AS2923	39.3% (11 lost)
Aug 22, 03:57 UTC	70	*	AS2708	46.8% (29 lost)
Aug 22, 03:42 UTC	80	*	AS265300	85.7% (18 lost)
Aug 22, 03:42 UTC	70	*	AS265175	37.1% (26 lost)
Aug 22, 03:42 UTC	80	*	AS264936	85.7% (6 lost)
Aug 22, 03:42 UTC	80	*	AS267447	85.7% (6 lost)
Aug 22, 03:42 UTC	70	*	AS28191	45.0% (27 lost)
Aug 22, 03:42 UTC	70	*	AS269182	55.6% (5 lost)
Aug 22, 03:42 UTC	80	*	AS265257	85.7% (6 lost)
Aug 22, 03:42 UTC	70	*	AS263922	54.5% (6 lost)
Aug 22, 03:42 UTC	80	*	AS264449	85.7% (6 lost)
Aug 22, 03:42 UTC	80	*	AS24492	54.5% (60 lost)
Aug 22, 03:42 UTC	70	*	AS262653	55.0% (11 lost)
Aug 22, 03:42 UTC	70	*	AS52721	57.1% (12 lost)
Aug 22, 03:42 UTC	70	*	AS262753	61.0% (36 lost)
Aug 22, 03:42 UTC	70	*	AS265041	66.7% (6 lost)
Aug 22, 03:42 UTC	70	*	AS263980	42.9% (12 lost)
Aug 22, 03:42 UTC	70	*	AS28182	51.3% (20 lost)
Aug 22, 03:27 UTC	70	*	AS6419	35.4% (23 lost)
Aug 22, 03:27 UTC	70	*	AS15171	43.9% (36 lost)
Aug 22, 03:27 UTC	80	*	AS394284	90.9% (10 lost)
Aug 22, 03:27 UTC	70	*	AS11228	41.7% (5 lost)
Aug 22, 03:27 UTC	80	*	AS393526	100.0% (6 lost)
Aug 22, 03:27 UTC	80	*	AS18282	100.0% (11 lost)
Aug 22, 03:27 UTC	80	*	AS25892	94.4% (17 lost)
Aug 22, 03:27 UTC	80	*	AS43578	100.0% (14 lost)
Aug 22, 03:27 UTC	80	*	AS10010	37.8% (71 lost)
Aug 22, 03:27 UTC	70	*	AS32829	45.5% (5 lost)
Aug 22, 03:27 UTC	70	*	AS40564	44.8% (13 lost)
Aug 22, 03:27 UTC	80	*	AS2514	45.1% (161 lost)
Aug 22, 03:27 UTC	80	*	AS134175	31.1% (38 lost)
Aug 22, 03:27 UTC	80	*	AS4693	100.0% (7 lost)
Aug 22, 03:12 UTC	70	*	AS264035	66.7% (6 lost)
Aug 22, 03:12 UTC	80	*	AS24530	100.0% (33 lost)
Aug 22, 03:12 UTC	70	*	AS23167	55.0% (11 lost)
Aug 22, 03:12 UTC	70	*	AS396990	60.0% (6 lost)
Aug 22, 03:12 UTC	70	*	AS30016	80.0% (8 lost)
Aug 22, 03:12 UTC	70	*	AS12654	39.1% (9 lost)
Aug 22, 03:12 UTC	70	*	AS54623	58.3% (7 lost)
Aug 22, 03:12 UTC	70	*	AS149089	50.0% (5 lost)
Aug 22, 02:57 UTC	70	*	AS135523	36.4% (8 lost)
Aug 22, 02:57 UTC	70	*	AS24435	47.5% (28 lost)
Aug 22, 02:57 UTC	70	*	AS55340	50.0% (6 lost)
Aug 22, 02:57 UTC	80	*	AS17563	58.3% (70 lost)
Aug 22, 02:57 UTC	70	*	AS9595	31.1% (14 lost)
Aug 22, 02:57 UTC	80	*	AS38422	100.0% (24 lost)
Aug 22, 02:57 UTC	70	*	AS150671	48.0% (12 lost)
Aug 22, 02:57 UTC	70	*	AS28171	72.1% (62 lost)
Aug 22, 02:57 UTC	70	*	AS131284	54.3% (25 lost)
Aug 22, 02:57 UTC	80	*	AS7679	86.1% (31 lost)
Aug 22, 02:57 UTC	70	*	AS150683	31.6% (6 lost)
Aug 22, 02:42 UTC	70	*	AS203090	32.0% (8 lost)
Aug 22, 02:42 UTC	70	*	AS216211	54.5% (12 lost)
Aug 22, 02:42 UTC	70	*	AS17411	71.4% (40 lost)
Aug 22, 02:42 UTC	70	*	AS401615	34.8% (8 lost)
Aug 22, 02:27 UTC	70	*	AS9387	34.8% (8 lost)
Aug 22, 02:27 UTC	70	*	AS139879	79.3% (23 lost)
Aug 22, 02:27 UTC	80	*	AS23966	79.5% (194 lost)
Aug 22, 02:27 UTC	70	*	AS131471	43.6% (17 lost)
Aug 22, 02:27 UTC	70	*	AS55501	65.0% (26 lost)
Aug 22, 02:27 UTC	70	*	AS131275	37.5% (6 lost)
Aug 22, 02:27 UTC	70	*	AS209554	47.8% (11 lost)
Aug 22, 02:27 UTC	80	*	AS136969	81.5% (22 lost)
Aug 22, 02:27 UTC	70	*	AS138655	31.0% (9 lost)
Aug 22, 02:27 UTC	70	*	AS152605	76.9% (20 lost)
Aug 22, 02:27 UTC	70	*	AS17539	45.2% (19 lost)
Aug 22, 02:27 UTC	80	*	AS12041	30.9% (71 lost)
Aug 22, 02:27 UTC	70	*	AS38193	54.2% (52 lost)
Aug 22, 02:27 UTC	80	*	AS38713	83.0% (39 lost)
Aug 22, 02:27 UTC	70	*	AS262595	54.5% (6 lost)
Aug 22, 02:27 UTC	70	*	AS133495	66.7% (12 lost)
Aug 22, 02:27 UTC	70	*	AS23750	39.3% (24 lost)
Aug 22, 02:27 UTC	80	*	AS38264	62.5% (163 lost)
Aug 22, 02:27 UTC	70	*	AS17787	50.0% (8 lost)
Aug 22, 02:27 UTC	70	*	AS135407	70.0% (63 lost)
Aug 22, 02:27 UTC	70	*	AS150371	36.8% (7 lost)
Aug 22, 02:27 UTC	80	*	AS135003	87.5% (7 lost)
Aug 22, 02:27 UTC	80	*	AS138368	100.0% (5 lost)
Aug 22, 02:27 UTC	70	*	AS136030	60.0% (18 lost)
Aug 22, 02:27 UTC	70	*	AS38547	66.7% (8 lost)
Aug 22, 02:12 UTC	70	*	AS140599	50.0% (5 lost)
Aug 22, 02:12 UTC	80	*	AS140504	100.0% (5 lost)
Aug 22, 02:12 UTC	80	*	AS266831	100.0% (5 lost)
Aug 22, 01:27 UTC	70	*	AS262550	34.5% (10 lost)

Frequently Asked Questions

What is a BGP Sudden withdrawal event?

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 2026-08-22 06:15 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.