The BGP Instability Report

The BGP Instability Report is updated daily. This report
was generated on 21 December 2025 06:20 (UTC+1000)

50 Most active ASes for the past 14 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	5413	300554	3.75%	97	3098.49	WAVENET-AS5413, GB
2	16509	280037	3.50%	14497	19.32	AMAZON-02, US
3	8151	185043	2.31%	12779	14.48	UNINET, MX
4	36903	86869	1.08%	1250	69.50	MT-MPLS, MA
5	7821	70653	0.88%	17	4156.06	ZAYO-MN, US
6	7459	56562	0.71%	1526	37.07	GRANDECOM-AS1, US
7	39891	56255	0.70%	4901	11.48	ALJAWWALSTC-AS, SA
8	335	53170	0.66%	224	237.37	DNIC-ASBLK-00306-00371, US
9	15766	48925	0.61%	15	3261.67	DOMICILIUM-AS, IM
10	6412	44699	0.56%	253	176.68	KW KEMS Block-A, Floor 7, Souq Al-Kabeer Kuwait City, State of Kuwait P O Box 3623, Safat 13037, KW
11	45899	40614	0.51%	3333	12.19	VNPT-AS-VN VNPT Corp, VN
12	13188	40075	0.50%	1607	24.94	TRIOLAN, UA
13	10620	38997	0.49%	3460	11.27	Telmex Colombia S.A., CO
14	9808	37660	0.47%	13424	2.81	CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
15	5371	37575	0.47%	295	127.37	DNIC-ASBLK-05120-05376, US
16	647	36757	0.46%	438	83.92	DNIC-ASBLK-00616-00665, US
17	7552	36256	0.45%	4049	8.95	VIETEL-AS-AP Viettel Group, VN
18	31148	34916	0.44%	554	63.03	FREENET_LLC, UA
19	29571	31713	0.40%	1072	29.58	ORANGE-COTE-IVOIRE, CI
20	36914	29896	0.37%	582	51.37	KENET-AS, KE
21	3303	29421	0.37%	255	115.38	SWISSCOM Swisscom Switzerland Ltd, CH
22	9919	29098	0.36%	970	30.00	NCIC-TW New Century InfoComm Tech Co., Ltd., TW
23	8452	27618	0.34%	1694	16.30	TE-AS TE-AS, EG
24	9829	27088	0.34%	1863	14.54	BSNL-NIB National Internet Backbone, IN
25	197207	26289	0.33%	988	26.61	MCCI-AS, IR
26	17561	26118	0.33%	3192	8.18	LCS-AS-AP LARUS Limited, HK
27	22884	25194	0.31%	1062	23.72	TOTAL PLAY TELECOMUNICACIONES SA DE CV, MX
28	37342	24162	0.30%	536	45.08	MOVITEL, MZ
29	18403	23801	0.30%	4660	5.11	FPT-AS-AP FPT Telecom Company, VN
30	58224	23547	0.29%	1169	20.14	TCI, IR
31	36352	21990	0.27%	2838	7.75	AS-COLOCROSSING, US
32	24863	20913	0.26%	1270	16.47	LINKdotNET-AS, EG
33	5972	20420	0.25%	1430	14.28	DNIC-ASBLK-05800-06055, US
34	37233	20257	0.25%	45	450.16	ORANGE-NIGER, NE
35	8369	20000	0.25%	76	263.16	INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
36	17488	19245	0.24%	1274	15.11	HATHWAY-NET-AP Hathway IP Over Cable Internet, IN
37	18101	19084	0.24%	684	27.90	RELIANCE-COMMUNICATIONS-IN Reliance Communications Ltd.DAKC MUMBAI, IN
38	36992	18524	0.23%	1825	10.15	ETISALAT-MISR, EG
39	37069	18217	0.23%	1094	16.65	MOBINIL, EG
40	12479	18005	0.22%	7335	2.45	UNI2-AS, ES
41	55836	17748	0.22%	1978	8.97	RELIANCEJIO-IN Reliance Jio Infocomm Limited, IN
42	11830	17674	0.22%	1992	8.87	Instituto Costarricense de Electricidad y Telecom., CR
43	24835	17388	0.22%	1960	8.87	RAYA-AS, EG
44	37294	16936	0.21%	142	119.27	TNM, MW
45	136255	16280	0.20%	126	129.21	TIMCL-AS-AP Telecom International Myanmar Co., Ltd, MM
46	398781	16107	0.20%	1234	13.05	OSL-188, US
47	44244	15907	0.20%	959	16.59	IRANCELL-AS, IR
48	4755	15757	0.20%	2223	7.09	TATACOMM-AS TATA Communications formerly VSNL is Leading ISP, IN
49	40138	15636	0.20%	7	2233.71	MDNET, US
50	9009	14825	0.19%	4045	3.67	M247, RO
Total		2170475	27.09%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	7954	11759.0	0.15%	3	11759	IMMENSE-NETWORKS, US
2	13341	7262.0	0.09%	5	7262	TRANQUILITY, US
3	27892	7238.0	0.09%	1	7238	Universidad del Zulia, VE
4	149038	5294.5	0.13%	2	10589	UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
5	56644	4875.0	0.06%	2	4875	SYNFS-AS, GB
6	15766	4447.7	0.61%	15	48925	DOMICILIUM-AS, IM
7	7821	4156.1	0.88%	17	70653	ZAYO-MN, US
8	33764	4134.0	0.05%	3	4134	AFRINIC-ZA-JNB-AS, MU
9	214929	3702.0	0.05%	2	3702	LASTRESPONSE, AT
10	29469	3568.0	0.04%	1	3568	GTU Khmelnitsky, Ukraine, UA
11	51897	3272.0	0.04%	1	3272	MIHAN, IR
12	5413	3098.5	3.75%	97	300554	WAVENET-AS5413, GB
13	61850	2661.0	0.10%	7	7983	A2 TELECOMUNICACOES LTDA, BR
14	208907	2655.0	0.03%	1	2655	RISING-BRIDGE-TECHNOLOGY, GB
15	265566	2503.5	0.06%	3	5007	TELESISTEMAS PENINSULARES SA DE CV, MX
16	198918	2474.3	0.09%	8	7423	MST-ZELDOL-AS MST Moskva Zeldol, RU
17	57670	2451.8	0.18%	6	14711	ASOPENWAY, UA
18	40138	2233.7	0.20%	7	15636	MDNET, US
19	136867	2200.7	0.08%	3	6602	IDNIC-TELKOMTELSTRA-AS-ID PT. Teltranet Aplikasi Solusi Telkomtelstra, ID
20	60742	1958.0	0.02%	1	1958	DAWOX, AT
21	21570	1885.0	0.02%	94	1885	ACI-1, CA
22	265046	1811.0	0.07%	3	5433	NET-MAIS INFORMATICA, BR
23	213812	1731.8	0.09%	4	6927	ALFATEH, SY
24	23000	1512.0	0.02%	5	1512	WESCOM, US
25	8987	1427.3	0.16%	113	12846	AWS-GOVCLOUD AWS-GOVCLOUD, IE
26	8613	1414.7	0.05%	3	4244	WAVENET-AS8613, GB
27	197320	1406.0	0.02%	1	1406	NPA-AS, GB
28	52852	1403.0	0.09%	5	7015	Last Mile Telecom, BR
29	28657	1401.0	0.05%	3	4203	MD Brasil - Tecnologia da Informacao Ltda, BR
30	202174	1388.0	0.02%	1	1388	EMSP-AS, NO
31	136501	1319.3	0.10%	21	7916	HKBNES-AS-AP HKBN Enterprise Solutions HK Limited, HK
32	205605	1269.0	0.02%	1	1269	ID-PROCESSING, AM
33	12335	1254.3	0.05%	3	3763	TARIO, RU
34	150935	1145.0	0.04%	3	3435	IDNIC-PONOROGO-ID Dinas Komunikasi Informatika dan Statistik Kab. Ponorogo, ID
35	8791	1069.7	0.04%	3	3209	FOEHN, GB
36	396950	1032.0	0.01%	1	1032	COMSTBARTH-AS, FR
37	29382	1023.5	0.03%	2	2047	UKRINFOSYSTEMS-AS, UA
38	207633	1012.0	0.03%	2	2024	NOSSPEED, TR
39	57285	1010.0	0.01%	1	1010	UKRINFOSYSTEMS-AS, UA
40	204318	958.0	0.01%	1	958	BGPTOOLS-QA, GB
41	131126	937.0	0.04%	5	2811	VNAIR-AS-VN Vietnam Airlines Corp, VN
42	269028	926.5	0.02%	2	1853	L 2 COMERCIO E SERVICOS DE INFORMATICA LTDA ME, BR
43	45763	918.0	0.02%	135	1836	OPTICOMMCOPTYLTD-AS-AP Opticomm Co Pty Ltd, AU
44	8369	833.3	0.25%	76	20000	INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
45	328300	823.0	0.01%	1	823	Malawi-Bank-AS, MW
46	12654	819.5	0.16%	22	13112	RIPE-NCC-RIS-AS Reseaux IP Europeens Network Coordination Centre RIPE NCC, NL
47	328811	793.0	0.01%	1	793	FCB-AS, MW
48	265548	772.0	0.06%	6	4632	WCD, S.A. DE C.V., MX
49	41383	769.5	0.04%	8	3078	WOLASN, GB
50	211851	747.0	0.02%
Total		116756.2	8.26%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	207.167.116.0/22	11759	0.14%	7954 -- IMMENSE-NETWORKS, US
2	124.195.190.0/24	11398	0.14%	38684 -- CMBDAEJEON-AS-KR CMB Daejeon Broadcasting Co,.Ltd, KR
3	130.137.231.0/24	10572	0.13%	16509 -- AMAZON-02, US
4	55.74.57.0/24	10351	0.12%	335 -- DNIC-ASBLK-00306-00371, US
5	55.67.56.0/24	10348	0.12%	335 -- DNIC-ASBLK-00306-00371, US
6	55.27.56.0/24	10338	0.12%	335 -- DNIC-ASBLK-00306-00371, US
7	55.27.217.0/24	10337	0.12%	335 -- DNIC-ASBLK-00306-00371, US
8	55.74.56.0/24	10313	0.12%	335 -- DNIC-ASBLK-00306-00371, US
9	186.83.117.0/24	8190	0.10%	10620 -- Telmex Colombia S.A., CO
10	130.137.108.0/24	8149	0.10%	16509 -- AMAZON-02, US
11	173.82.125.0/24	8006	0.10%	16509 -- AMAZON-02, US
12	130.137.12.0/24	7803	0.09%	16509 -- AMAZON-02, US
13	130.137.230.0/24	7560	0.09%	16509 -- AMAZON-02, US
14	199.47.232.0/22	7262	0.09%	13341 -- TRANQUILITY, US
15	190.170.0.0/18	7238	0.09%	27892 -- Universidad del Zulia, VE
16	173.82.66.0/24	7011	0.08%	16509 -- AMAZON-02, US
17	130.137.219.0/24	6999	0.08%	16509 -- AMAZON-02, US
18	177.86.122.0/23	6973	0.08%	52852 -- Last Mile Telecom, BR
19	130.137.118.0/24	6886	0.08%	8987 -- AWS-GOVCLOUD AWS-GOVCLOUD, IE
20	130.137.80.0/24	6858	0.08%	16509 -- AMAZON-02, US
21	84.205.66.0/24	6854	0.08%	12654 -- RIPE-NCC-RIS-AS Reseaux IP Europeens Network Coordination Centre RIPE NCC, NL
22	130.137.79.0/24	6776	0.08%	16509 -- AMAZON-02, US
23	195.114.122.0/24	6635	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
24	45.83.76.0/22	6581	0.08%	5413 -- WAVENET-AS5413, GB
25	45.83.76.0/24	6581	0.08%	5413 -- WAVENET-AS5413, GB
26	193.105.156.0/24	6567	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
27	45.132.148.0/23	6564	0.08%	5413 -- WAVENET-AS5413, GB
28	37.252.60.0/22	6562	0.08%	5413 -- WAVENET-AS5413, GB
29	103.104.136.0/24	6560	0.08%	136867 -- IDNIC-TELKOMTELSTRA-AS-ID PT. Teltranet Aplikasi Solusi Telkomtelstra, ID
30	5.252.36.0/22	6547	0.08%	5413 -- WAVENET-AS5413, GB
31	46.31.71.0/24	6541	0.08%	5413 -- WAVENET-AS5413, GB
32	5.22.224.0/21	6527	0.08%	5413 -- WAVENET-AS5413, GB
33	173.82.67.0/24	6525	0.08%	16509 -- AMAZON-02, US
34	173.82.63.0/24	6519	0.08%	16509 -- AMAZON-02, US
35	195.114.123.0/24	6502	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
36	173.82.108.0/24	6499	0.08%	16509 -- AMAZON-02, US
37	62.69.32.0/19	6454	0.08%	5413 -- WAVENET-AS5413, GB
38	62.72.128.0/19	6454	0.08%	5413 -- WAVENET-AS5413, GB
39	62.44.64.0/19	6454	0.08%	5413 -- WAVENET-AS5413, GB
40	62.105.64.0/18	6442	0.08%	5413 -- WAVENET-AS5413, GB
41	62.232.0.0/16	6404	0.08%	5413 -- WAVENET-AS5413, GB
42	130.137.150.0/24	6337	0.08%	16509 -- AMAZON-02, US
43	130.137.28.0/24	6283	0.08%	16509 -- AMAZON-02, US
44	130.137.16.0/24	6268	0.08%	16509 -- AMAZON-02, US
45	177.46.36.0/24	6255	0.08%	28135 -- ASSOCIACAO NACIONAL PARA INCLUSAO DIGITAL - ANID, BR
46	173.82.129.0/24	6245	0.07%	16509 -- AMAZON-02, US
47	130.137.127.0/24	6230	0.07%	16509 -- AMAZON-02, US
48	130.137.227.0/24	6217	0.07%	16509 -- AMAZON-02, US
49	130.137.124.0/24	6216	0.07%	16509 -- AMAZON-02, US
50	130.137.26.0/24	6179	0.07%	16509 -- AMAZON-02, US
Total		368129	4.42%

14 Day BGP Profile: 7-December-2025 00:00 - 20-December-2025 23:59 (UTC+1000)

Number of BGP Update Messages:	19410980
Number of Prefix Updates:	8008998
Number of Prefix Withdrawals:	320404
Average Prefixes per BGP Update:	0.43
Average BGP Update Messages per second:	16.05
Average Prefix Updates per second:	6.89
Peak BGP Update Message Rate per second:	31703	(07:40:02 Mon, 8-Dec-2025)
Peak Prefix Update Rate per second:	1282	(00:42:35 Sat, 13-Dec-2025)
Peak Prefix Withdraw Rate per second:	26752	(06:11:31 Tue, 9-Dec-2025)
Prefix Count:	1066021
Updated Prefix Count:	614570
Stable Prefix Count:	451451
Origin AS Count:	77691
Updated Origin AS Count:	54150
Stable Origin AS Count:	23541
Unique Path Count:	567087
Updated Path Count:	400562
Stable Path Count:	166525

Hourly Average of Per-Second Updated and Withdrawn Prefix Rate

Hourly Peak of Per-Second Updated and Withdrawn Prefix Rate

Hourly Average Per-Second Updated Prefix Rate by Update Type

Hourly Peak of Per-Second Updated Prefix Rate by Update Type

BGP Table Activity

Cumulative Distribution of per-Prefix and per-AS Updates

Notes

The data has been gathered using a single eBGP peering with AS 131072. The observations of BGP path change are relative to this observation point. The updates are generated by a Quagga BGP implementation providing a timestamped log of incoming update messages. The timezone of this monitoring point is UTC+1000. Updates are processed on a 24 hour cycle.