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

2,709

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Aug 31, 03:54 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 2,709 · last 24h

Most recent Sudden withdrawal event events detected across RIPE RIS collectors in the last 24 hours
When	Severity	Prefix	AS	Drop
Aug 31, 03:54 UTC	70	*	AS32829	45.5% (5 lost)
Aug 31, 03:54 UTC	80	*	AS51020	100.0% (25 lost)
Aug 31, 03:54 UTC	70	*	AS11676	35.6% (16 lost)
Aug 31, 03:54 UTC	70	*	AS26881	46.7% (7 lost)
Aug 31, 03:54 UTC	80	*	AS202651	100.0% (19 lost)
Aug 31, 03:54 UTC	70	*	AS205889	45.5% (5 lost)
Aug 31, 03:54 UTC	70	*	AS51500	47.8% (11 lost)
Aug 31, 03:54 UTC	70	*	AS264479	57.1% (8 lost)
Aug 31, 03:54 UTC	70	*	AS138152	34.1% (15 lost)
Aug 31, 03:54 UTC	80	*	AS17040	100.0% (6 lost)
Aug 31, 03:54 UTC	80	*	AS40727	100.0% (12 lost)
Aug 31, 03:54 UTC	80	*	AS198735	100.0% (8 lost)
Aug 31, 03:54 UTC	70	*	AS397735	70.6% (12 lost)
Aug 31, 03:54 UTC	70	*	AS40861	32.9% (27 lost)
Aug 31, 03:54 UTC	80	*	AS55045	92.9% (13 lost)
Aug 31, 03:54 UTC	80	*	AS262252	100.0% (8 lost)
Aug 31, 03:54 UTC	70	*	AS147019	76.9% (40 lost)
Aug 31, 03:54 UTC	70	*	AS263888	57.1% (8 lost)
Aug 31, 03:54 UTC	80	*	AS210022	83.3% (5 lost)
Aug 31, 03:54 UTC	70	*	AS262428	61.4% (35 lost)
Aug 31, 03:54 UTC	70	*	AS35213	54.5% (6 lost)
Aug 31, 03:54 UTC	80	*	AS212330	100.0% (17 lost)
Aug 31, 03:54 UTC	80	*	AS7821	100.0% (17 lost)
Aug 31, 03:54 UTC	80	*	AS4249	38.0% (89 lost)
Aug 31, 03:54 UTC	70	*	AS37009	36.0% (18 lost)
Aug 31, 03:54 UTC	80	*	AS12041	31.3% (71 lost)
Aug 31, 03:54 UTC	80	*	AS393526	100.0% (6 lost)
Aug 31, 03:54 UTC	80	*	AS197421	100.0% (7 lost)
Aug 31, 03:54 UTC	70	*	AS43925	33.0% (31 lost)
Aug 31, 03:54 UTC	80	*	AS18801	85.7% (6 lost)
Aug 31, 03:54 UTC	70	*	AS55189	55.6% (5 lost)
Aug 31, 03:54 UTC	70	*	AS30021	75.0% (9 lost)
Aug 31, 03:54 UTC	70	*	AS57537	75.0% (6 lost)
Aug 31, 03:54 UTC	80	*	AS20243	100.0% (6 lost)
Aug 31, 03:54 UTC	70	*	AS40564	43.3% (13 lost)
Aug 31, 03:54 UTC	70	*	AS207234	72.7% (8 lost)
Aug 31, 03:54 UTC	80	*	AS203214	42.3% (290 lost)
Aug 31, 03:54 UTC	80	*	AS201749	100.0% (31 lost)
Aug 31, 03:54 UTC	90	*	AS5786	98.5% (195 lost)
Aug 31, 03:54 UTC	80	*	AS46414	93.8% (15 lost)
Aug 31, 03:54 UTC	80	*	AS208365	85.7% (6 lost)
Aug 31, 03:54 UTC	70	*	AS40026	50.0% (5 lost)
Aug 31, 03:54 UTC	80	*	AS211908	100.0% (19 lost)
Aug 31, 03:54 UTC	70	*	AS25273	54.5% (18 lost)
Aug 31, 03:54 UTC	70	*	AS11700	61.5% (8 lost)
Aug 31, 03:54 UTC	80	*	AS210402	100.0% (28 lost)
Aug 31, 03:54 UTC	70	*	AS27650	31.6% (6 lost)
Aug 31, 03:54 UTC	70	*	AS265279	57.1% (12 lost)
Aug 31, 03:54 UTC	80	*	AS36504	100.0% (9 lost)
Aug 31, 03:54 UTC	70	*	AS28589	70.0% (7 lost)
Aug 31, 03:54 UTC	80	*	AS24492	51.8% (57 lost)
Aug 31, 03:54 UTC	80	*	AS32524	97.1% (66 lost)
Aug 31, 03:54 UTC	70	*	AS48326	45.5% (5 lost)
Aug 31, 03:54 UTC	70	*	AS28876	46.2% (6 lost)
Aug 31, 03:54 UTC	80	*	AS198589	100.0% (23 lost)
Aug 31, 03:54 UTC	90	*	AS199739	100.0% (136 lost)
Aug 31, 03:54 UTC	70	*	AS998	75.0% (6 lost)
Aug 31, 03:54 UTC	80	*	AS54706	81.2% (26 lost)
Aug 31, 03:54 UTC	80	*	AS205800	100.0% (10 lost)
Aug 31, 03:54 UTC	70	*	AS211970	66.7% (6 lost)
Aug 31, 03:54 UTC	80	*	AS3194	100.0% (6 lost)
Aug 31, 03:54 UTC	80	*	AS57324	90.9% (30 lost)
Aug 31, 03:54 UTC	70	*	AS24527	33.3% (5 lost)
Aug 31, 03:54 UTC	80	*	AS210016	100.0% (8 lost)
Aug 31, 03:54 UTC	70	*	AS201603	60.0% (6 lost)
Aug 31, 03:54 UTC	80	*	AS262212	90.0% (9 lost)
Aug 31, 03:54 UTC	70	*	AS28089	75.0% (6 lost)
Aug 31, 03:54 UTC	70	*	AS19863	76.3% (45 lost)
Aug 31, 03:54 UTC	70	*	AS262565	54.5% (6 lost)
Aug 31, 03:54 UTC	80	*	AS200200	100.0% (5 lost)
Aug 31, 03:54 UTC	70	*	AS50597	30.6% (15 lost)
Aug 31, 03:54 UTC	70	*	AS56400	54.5% (6 lost)
Aug 31, 03:54 UTC	70	*	AS27482	41.2% (14 lost)
Aug 31, 03:54 UTC	80	*	AS17400	98.5% (67 lost)
Aug 31, 03:54 UTC	70	*	AS28227	52.2% (12 lost)
Aug 31, 03:54 UTC	70	*	AS60815	50.0% (5 lost)
Aug 31, 03:54 UTC	80	*	AS209193	96.8% (30 lost)
Aug 31, 03:54 UTC	80	*	AS36225	100.0% (6 lost)
Aug 31, 03:54 UTC	80	*	AS153391	100.0% (6 lost)
Aug 31, 03:54 UTC	80	*	AS394541	100.0% (8 lost)
Aug 31, 03:54 UTC	80	*	AS264592	85.7% (6 lost)
Aug 31, 03:54 UTC	70	*	AS44521	50.0% (7 lost)
Aug 31, 03:54 UTC	80	*	AS33236	90.0% (9 lost)
Aug 31, 03:54 UTC	70	*	AS199284	57.1% (12 lost)
Aug 31, 03:54 UTC	80	*	AS134729	87.5% (63 lost)
Aug 31, 03:54 UTC	70	*	AS327700	45.1% (23 lost)
Aug 31, 03:54 UTC	70	*	AS12355	54.5% (6 lost)
Aug 31, 03:54 UTC	70	*	AS9751	57.9% (11 lost)
Aug 31, 03:54 UTC	80	*	AS269655	85.7% (6 lost)
Aug 31, 03:54 UTC	70	*	AS11183	33.3% (7 lost)
Aug 31, 03:54 UTC	70	*	AS35399	72.7% (8 lost)
Aug 31, 03:54 UTC	80	*	AS394284	100.0% (10 lost)
Aug 31, 03:54 UTC	80	*	AS208324	100.0% (31 lost)
Aug 31, 03:54 UTC	80	*	AS205906	85.7% (6 lost)
Aug 31, 03:54 UTC	70	*	AS8257	46.2% (6 lost)
Aug 31, 03:39 UTC	80	*	AS8376	62.1% (470 lost)
Aug 31, 03:39 UTC	80	*	AS152194	38.5% (243 lost)
Aug 31, 03:39 UTC	70	*	AS48101	40.3% (25 lost)
Aug 31, 03:39 UTC	70	*	AS8280	76.5% (26 lost)
Aug 31, 03:39 UTC	70	*	AS141679	74.0% (54 lost)
Aug 31, 03:39 UTC	80	*	AS15557	43.8% (64 lost)
Aug 31, 03:39 UTC	70	*	AS8030	75.0% (30 lost)
Aug 31, 03:39 UTC	70	*	AS20738	52.6% (41 lost)
Aug 31, 03:39 UTC	80	*	AS3462	40.5% (89 lost)
Aug 31, 03:39 UTC	80	*	AS6830	43.6% (72 lost)
Aug 31, 03:39 UTC	70	*	AS33874	66.2% (45 lost)
Aug 31, 03:39 UTC	80	*	AS36884	44.9% (129 lost)
Aug 31, 03:39 UTC	80	*	AS55960	98.8% (81 lost)
Aug 31, 03:39 UTC	70	*	AS136199	57.4% (35 lost)
Aug 31, 03:39 UTC	80	*	AS10396	52.2% (70 lost)
Aug 31, 03:39 UTC	80	*	AS35592	90.3% (28 lost)
Aug 31, 03:39 UTC	80	*	AS131591	66.2% (174 lost)
Aug 31, 03:39 UTC	80	*	AS33339	34.1% (42 lost)
Aug 31, 03:39 UTC	90	*	AS213382	90.6% (261 lost)
Aug 31, 03:39 UTC	70	*	AS393336	68.4% (26 lost)
Aug 31, 03:39 UTC	80	*	AS396420	30.0% (48 lost)
Aug 31, 03:39 UTC	80	*	AS42689	38.1% (130 lost)
Aug 31, 03:39 UTC	70	*	AS141771	52.7% (29 lost)
Aug 31, 03:39 UTC	70	*	AS139201	75.0% (39 lost)
Aug 31, 03:39 UTC	80	*	AS36947	34.3% (187 lost)
Aug 31, 03:39 UTC	70	*	AS201776	43.7% (38 lost)
Aug 31, 03:39 UTC	70	*	AS136209	76.2% (32 lost)
Aug 31, 03:39 UTC	80	*	AS10175	82.4% (42 lost)
Aug 31, 03:39 UTC	80	*	AS47589	66.1% (187 lost)
Aug 31, 03:39 UTC	80	*	AS12663	57.9% (99 lost)
Aug 31, 03:39 UTC	70	*	AS395748	51.9% (27 lost)
Aug 31, 03:39 UTC	80	*	AS14813	72.2% (174 lost)
Aug 31, 03:39 UTC	70	*	AS133385	52.7% (29 lost)
Aug 31, 03:39 UTC	80	*	AS32432	100.0% (27 lost)
Aug 31, 03:39 UTC	80	*	AS4213	67.3% (70 lost)
Aug 31, 03:39 UTC	80	*	AS24400	35.8% (191 lost)
Aug 31, 03:39 UTC	80	*	AS3257	38.3% (525 lost)
Aug 31, 03:39 UTC	70	*	AS140309	53.1% (34 lost)
Aug 31, 03:39 UTC	70	*	AS197071	47.5% (28 lost)
Aug 31, 03:39 UTC	70	*	AS32133	71.7% (33 lost)
Aug 31, 03:39 UTC	70	*	AS27338	79.1% (53 lost)
Aug 31, 03:39 UTC	80	*	AS29518	47.5% (57 lost)
Aug 31, 03:39 UTC	80	*	AS131429	30.6% (70 lost)
Aug 31, 03:39 UTC	80	*	AS54600	42.6% (170 lost)
Aug 31, 03:39 UTC	90	*	AS35994	86.8% (283 lost)
Aug 31, 03:39 UTC	70	*	AS136557	37.8% (31 lost)
Aug 31, 03:39 UTC	70	*	AS5778	60.4% (55 lost)
Aug 31, 03:39 UTC	80	*	AS29066	60.8% (248 lost)
Aug 31, 03:39 UTC	80	*	AS22773	40.8% (1,984 lost)
Aug 31, 03:39 UTC	80	*	AS41201	98.0% (96 lost)
Aug 31, 03:39 UTC	80	*	AS54075	92.3% (48 lost)
Aug 31, 03:39 UTC	80	*	AS10013	52.7% (213 lost)
Aug 31, 03:39 UTC	70	*	AS18182	60.7% (51 lost)
Aug 31, 03:39 UTC	80	*	AS29084	49.4% (76 lost)
Aug 31, 03:39 UTC	80	*	AS140638	100.0% (41 lost)
Aug 31, 03:39 UTC	70	*	AS10143	53.8% (43 lost)
Aug 31, 03:39 UTC	70	*	AS9141	71.1% (54 lost)
Aug 31, 03:39 UTC	80	*	AS30985	35.7% (45 lost)
Aug 31, 03:39 UTC	80	*	AS51964	43.6% (123 lost)
Aug 31, 03:39 UTC	80	*	AS15805	57.3% (63 lost)
Aug 31, 03:39 UTC	80	*	AS16625	42.8% (824 lost)
Aug 31, 03:39 UTC	70	*	AS47253	43.9% (29 lost)
Aug 31, 03:39 UTC	80	*	AS14265	51.8% (186 lost)
Aug 31, 03:39 UTC	80	*	AS19108	61.6% (223 lost)
Aug 31, 03:39 UTC	70	*	AS269820	68.4% (39 lost)
Aug 31, 03:39 UTC	70	*	AS265721	56.7% (55 lost)
Aug 31, 03:39 UTC	80	*	AS200876	86.1% (31 lost)
Aug 31, 03:39 UTC	80	*	AS40306	58.5% (62 lost)
Aug 31, 03:39 UTC	80	*	AS58466	51.8% (57 lost)
Aug 31, 03:39 UTC	70	*	AS38105	37.1% (26 lost)
Aug 31, 03:39 UTC	80	*	AS7296	43.5% (110 lost)
Aug 31, 03:39 UTC	70	*	AS36180	59.1% (52 lost)
Aug 31, 03:39 UTC	70	*	AS38705	73.7% (28 lost)
Aug 31, 03:39 UTC	80	*	AS8764	62.9% (577 lost)
Aug 31, 03:39 UTC	80	*	AS33070	54.4% (56 lost)
Aug 31, 03:39 UTC	80	*	AS9155	78.1% (346 lost)
Aug 31, 03:39 UTC	80	*	AS48951	92.6% (25 lost)
Aug 31, 03:39 UTC	80	*	AS14051	48.6% (51 lost)
Aug 31, 03:39 UTC	80	*	AS8796	44.2% (144 lost)
Aug 31, 03:39 UTC	70	*	AS8092	54.2% (26 lost)
Aug 31, 03:39 UTC	80	*	AS3	92.0% (81 lost)
Aug 31, 03:39 UTC	80	*	AS6256	98.9% (90 lost)
Aug 31, 03:39 UTC	80	*	AS42926	40.9% (83 lost)
Aug 31, 03:39 UTC	80	*	AS3329	46.8% (181 lost)
Aug 31, 03:39 UTC	70	*	AS8680	43.5% (30 lost)
Aug 31, 03:39 UTC	70	*	AS208951	41.0% (25 lost)
Aug 31, 03:39 UTC	80	*	AS13977	73.7% (570 lost)
Aug 31, 03:39 UTC	80	*	AS55592	79.0% (94 lost)
Aug 31, 03:39 UTC	80	*	AS137735	100.0% (39 lost)
Aug 31, 03:39 UTC	70	*	AS11398	68.8% (44 lost)
Aug 31, 03:39 UTC	70	*	AS7385	38.4% (28 lost)
Aug 31, 03:39 UTC	80	*	AS39891	30.2% (1,483 lost)
Aug 31, 03:39 UTC	80	*	AS55286	35.6% (276 lost)
Aug 31, 03:39 UTC	70	*	AS134763	55.4% (31 lost)
Aug 31, 03:39 UTC	90	*	AS9070	90.2% (110 lost)
Aug 31, 03:39 UTC	80	*	AS4816	85.7% (36 lost)
Aug 31, 03:39 UTC	80	*	AS37254	100.0% (28 lost)
Aug 31, 03:39 UTC	80	*	AS153252	88.1% (59 lost)
Aug 31, 03:39 UTC	80	*	AS26410	100.0% (29 lost)
Aug 31, 03:39 UTC	80	*	AS11976	45.6% (185 lost)
Aug 31, 03:39 UTC	70	*	AS42973	51.6% (32 lost)
Aug 31, 03:39 UTC	80	*	AS30036	36.7% (934 lost)
Aug 31, 03:39 UTC	90	*	AS45271	90.4% (369 lost)
Aug 31, 03:39 UTC	90	*	AS35699	84.8% (95 lost)
Aug 31, 03:39 UTC	70	*	AS219427	71.8% (56 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 2026-08-31 04:05 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.