The BGP Instability Report

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

50 Most active ASes for the past 14 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	16509	287676	3.59%	14497	19.84	AMAZON-02, US
2	5413	279663	3.49%	97	2883.12	WAVENET-AS5413, GB
3	8151	189780	2.37%	12778	14.85	UNINET, MX
4	36903	82846	1.03%	1250	66.28	MT-MPLS, MA
5	7821	70262	0.88%	17	4133.06	ZAYO-MN, US
6	39891	56051	0.70%	4833	11.60	ALJAWWALSTC-AS, SA
7	335	52814	0.66%	224	235.78	DNIC-ASBLK-00306-00371, US
8	7459	52008	0.65%	1526	34.08	GRANDECOM-AS1, US
9	15766	47466	0.59%	15	3164.40	DOMICILIUM-AS, IM
10	6412	44700	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	42171	0.53%	3333	12.65	VNPT-AS-VN VNPT Corp, VN
12	10620	40928	0.51%	3460	11.83	Telmex Colombia S.A., CO
13	13188	40716	0.51%	1607	25.34	TRIOLAN, UA
14	9808	37549	0.47%	13424	2.80	CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
15	5371	37008	0.46%	291	127.18	DNIC-ASBLK-05120-05376, US
16	647	35689	0.45%	437	81.67	DNIC-ASBLK-00616-00665, US
17	31148	35326	0.44%	554	63.77	FREENET_LLC, UA
18	29571	31557	0.39%	1072	29.44	ORANGE-COTE-IVOIRE, CI
19	58224	31127	0.39%	1169	26.63	TCI, IR
20	3303	29503	0.37%	255	115.70	SWISSCOM Swisscom Switzerland Ltd, CH
21	36914	29486	0.37%	582	50.66	KENET-AS, KE
22	9829	29138	0.36%	1862	15.65	BSNL-NIB National Internet Backbone, IN
23	9919	28912	0.36%	970	29.81	NCIC-TW New Century InfoComm Tech Co., Ltd., TW
24	7552	28485	0.36%	4033	7.06	VIETEL-AS-AP Viettel Group, VN
25	8452	27991	0.35%	1693	16.53	TE-AS TE-AS, EG
26	22884	26808	0.33%	1062	25.24	TOTAL PLAY TELECOMUNICACIONES SA DE CV, MX
27	197207	26792	0.33%	994	26.95	MCCI-AS, IR
28	17561	25621	0.32%	3164	8.10	LCS-AS-AP LARUS Limited, HK
29	36352	24739	0.31%	2838	8.72	AS-COLOCROSSING, US
30	37342	23941	0.30%	536	44.67	MOVITEL, MZ
31	37294	23640	0.30%	141	167.66	TNM, MW
32	18403	23248	0.29%	4661	4.99	FPT-AS-AP FPT Telecom Company, VN
33	5972	22314	0.28%	1430	15.60	DNIC-ASBLK-05800-06055, US
34	17488	20687	0.26%	1274	16.24	HATHWAY-NET-AP Hathway IP Over Cable Internet, IN
35	37233	20467	0.26%	45	454.82	ORANGE-NIGER, NE
36	8369	20043	0.25%	76	263.72	INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
37	18101	19614	0.24%	684	28.68	RELIANCE-COMMUNICATIONS-IN Reliance Communications Ltd.DAKC MUMBAI, IN
38	11830	19243	0.24%	1992	9.66	Instituto Costarricense de Electricidad y Telecom., CR
39	24863	18770	0.23%	1269	14.79	LINKdotNET-AS, EG
40	55836	18594	0.23%	1978	9.40	RELIANCEJIO-IN Reliance Jio Infocomm Limited, IN
41	44244	18205	0.23%	964	18.88	IRANCELL-AS, IR
42	37069	18105	0.23%	1094	16.55	MOBINIL, EG
43	12479	18016	0.22%	7335	2.46	UNI2-AS, ES
44	6503	16798	0.21%	732	22.95	Axtel, S.A.B. de C.V., MX
45	36992	16618	0.21%	1825	9.11	ETISALAT-MISR, EG
46	4755	16144	0.20%	2223	7.26	TATACOMM-AS TATA Communications formerly VSNL is Leading ISP, IN
47	55933	16133	0.20%	372	43.37	CLOUDIE-AS-AP Cloudie Limited, HK
48	398781	16107	0.20%	1234	13.05	OSL-188, US
49	57670	15835	0.20%	6	2639.17	ASOPENWAY, UA
50	11664	15614	0.19%	1372	11.38	Techtel LMDS Comunicaciones Interactivas S.A., AR
Total		2170948	27.10%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	7954	11655.0	0.15%	3	11655	IMMENSE-NETWORKS, US
2	13341	7148.0	0.09%	5	7148	TRANQUILITY, US
3	27892	6404.0	0.08%	1	6404	Universidad del Zulia, VE
4	149038	5293.0	0.13%	2	10586	UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
5	56644	4763.0	0.06%	2	4763	SYNFS-AS, GB
6	15766	4315.1	0.59%	15	47466	DOMICILIUM-AS, IM
7	214929	4228.0	0.05%	2	4228	LASTRESPONSE, AT
8	7821	4133.1	0.88%	17	70262	ZAYO-MN, US
9	33764	4083.0	0.05%	3	4083	AFRINIC-ZA-JNB-AS, MU
10	29469	3540.0	0.04%	1	3540	GTU Khmelnitsky, Ukraine, UA
11	51897	3327.0	0.04%	1	3327	MIHAN, IR
12	61850	3025.7	0.11%	7	9077	A2 TELECOMUNICACOES LTDA, BR
13	5413	2883.1	3.49%	97	279663	WAVENET-AS5413, GB
14	265566	2736.0	0.07%	3	5472	TELESISTEMAS PENINSULARES SA DE CV, MX
15	208907	2698.0	0.03%	1	2698	RISING-BRIDGE-TECHNOLOGY, GB
16	57670	2639.2	0.20%	6	15835	ASOPENWAY, UA
17	198918	2488.3	0.09%	8	7465	MST-ZELDOL-AS MST Moskva Zeldol, RU
18	136867	2132.7	0.08%	3	6398	IDNIC-TELKOMTELSTRA-AS-ID PT. Teltranet Aplikasi Solusi Telkomtelstra, ID
19	265046	2040.0	0.08%	3	6120	NET-MAIS INFORMATICA, BR
20	60742	1953.0	0.02%	1	1953	DAWOX, AT
21	21570	1880.0	0.02%	94	1880	ACI-1, CA
22	40138	1864.7	0.16%	7	13053	MDNET, US
23	8987	1848.1	0.16%	113	12937	AWS-GOVCLOUD AWS-GOVCLOUD, IE
24	12335	1766.0	0.07%	3	5298	TARIO, RU
25	202174	1726.0	0.02%	1	1726	EMSP-AS, NO
26	213812	1675.0	0.08%	4	6700	ALFATEH, SY
27	23000	1512.0	0.02%	5	1512	WESCOM, US
28	52852	1493.2	0.09%	5	7466	Last Mile Telecom, BR
29	28657	1418.7	0.05%	3	4256	MD Brasil - Tecnologia da Informacao Ltda, BR
30	396950	1390.0	0.02%	1	1390	COMSTBARTH-AS, FR
31	205605	1291.0	0.02%	1	1291	ID-PROCESSING, AM
32	395327	1259.0	0.02%	1	1259	BAYFEDCU, US
33	214675	1154.0	0.01%	1	1154	STARLAMP Starlamp Network Project, JP
34	150935	1145.0	0.04%	3	3435	IDNIC-PONOROGO-ID Dinas Komunikasi Informatika dan Statistik Kab. Ponorogo, ID
35	8613	1086.3	0.04%	3	3259	WAVENET-AS8613, GB
36	197320	1077.0	0.01%	1	1077	NPA-AS, GB
37	204318	1031.0	0.01%	1	1031	BGPTOOLS-QA, GB
38	136501	975.2	0.07%	21	5851	HKBNES-AS-AP HKBN Enterprise Solutions HK Limited, HK
39	328300	971.0	0.01%	1	971	Malawi-Bank-AS, MW
40	29382	967.0	0.02%	2	1934	UKRINFOSYSTEMS-AS, UA
41	57285	960.0	0.01%	1	960	UKRINFOSYSTEMS-AS, UA
42	207633	924.0	0.02%	2	1848	NOSSPEED, TR
43	886	923.0	0.01%	1	923	SBH-IX-SERVICES, FR
44	45763	918.0	0.02%	135	1836	OPTICOMMCOPTYLTD-AS-AP Opticomm Co Pty Ltd, AU
45	269028	885.0	0.02%	2	1770	L 2 COMERCIO E SERVICOS DE INFORMATICA LTDA ME, BR
46	8791	883.7	0.03%	3	2651	FOEHN, GB
47	267377	865.5	0.02%	4	1731	acesso net telecomunicacoes ltda-me, BR
48	8369	835.1	0.25%	76	20043	INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
49	131126	827.0	0.03%	5	2481	VNAIR-AS-VN Vietnam Airlines Corp, VN
50	12654	823.1	0.16%
Total		117859.8	7.84%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	207.167.116.0/22	11655	0.14%	7954 -- IMMENSE-NETWORKS, US
2	124.195.190.0/24	11326	0.14%	38684 -- CMBDAEJEON-AS-KR CMB Daejeon Broadcasting Co,.Ltd, KR
3	130.137.231.0/24	10565	0.13%	16509 -- AMAZON-02, US
4	55.67.56.0/24	10313	0.12%	335 -- DNIC-ASBLK-00306-00371, US
5	55.27.217.0/24	10313	0.12%	335 -- DNIC-ASBLK-00306-00371, US
6	55.27.56.0/24	10309	0.12%	335 -- DNIC-ASBLK-00306-00371, US
7	55.74.57.0/24	10248	0.12%	335 -- DNIC-ASBLK-00306-00371, US
8	55.74.56.0/24	10213	0.12%	335 -- DNIC-ASBLK-00306-00371, US
9	186.83.117.0/24	8200	0.10%	10620 -- Telmex Colombia S.A., CO
10	130.137.108.0/24	8178	0.10%	16509 -- AMAZON-02, US
11	173.82.125.0/24	8036	0.10%	16509 -- AMAZON-02, US
12	130.137.12.0/24	7890	0.09%	16509 -- AMAZON-02, US
13	130.137.230.0/24	7543	0.09%	16509 -- AMAZON-02, US
14	177.86.122.0/23	7404	0.09%	52852 -- Last Mile Telecom, BR
15	199.47.232.0/22	7148	0.09%	13341 -- TRANQUILITY, US
16	173.82.66.0/24	7072	0.08%	16509 -- AMAZON-02, US
17	130.137.219.0/24	7037	0.08%	16509 -- AMAZON-02, US
18	130.137.118.0/24	6958	0.08%	8987 -- AWS-GOVCLOUD AWS-GOVCLOUD, IE
19	130.137.80.0/24	6925	0.08%	16509 -- AMAZON-02, US
20	84.205.66.0/24	6869	0.08%	12654 -- RIPE-NCC-RIS-AS Reseaux IP Europeens Network Coordination Centre RIPE NCC, NL
21	130.137.79.0/24	6764	0.08%	16509 -- AMAZON-02, US
22	195.114.122.0/24	6640	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
23	45.83.76.0/24	6636	0.08%	5413 -- WAVENET-AS5413, GB
24	45.83.76.0/22	6636	0.08%	5413 -- WAVENET-AS5413, GB
25	37.252.60.0/22	6628	0.08%	5413 -- WAVENET-AS5413, GB
26	45.132.148.0/23	6619	0.08%	5413 -- WAVENET-AS5413, GB
27	5.252.36.0/22	6608	0.08%	5413 -- WAVENET-AS5413, GB
28	5.22.224.0/21	6599	0.08%	5413 -- WAVENET-AS5413, GB
29	46.31.71.0/24	6588	0.08%	5413 -- WAVENET-AS5413, GB
30	193.105.156.0/24	6576	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
31	173.82.67.0/24	6567	0.08%	16509 -- AMAZON-02, US
32	173.82.63.0/24	6534	0.08%	16509 -- AMAZON-02, US
33	195.114.123.0/24	6531	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
34	173.82.108.0/24	6527	0.08%	16509 -- AMAZON-02, US
35	62.44.64.0/19	6504	0.08%	5413 -- WAVENET-AS5413, GB
36	62.72.128.0/19	6500	0.08%	5413 -- WAVENET-AS5413, GB
37	62.69.32.0/19	6500	0.08%	5413 -- WAVENET-AS5413, GB
38	62.105.64.0/18	6488	0.08%	5413 -- WAVENET-AS5413, GB
39	62.232.0.0/16	6448	0.08%	5413 -- WAVENET-AS5413, GB
40	130.137.150.0/24	6419	0.08%	16509 -- AMAZON-02, US
41	190.170.0.0/18	6404	0.08%	27892 -- Universidad del Zulia, VE
42	130.137.16.0/24	6379	0.08%	16509 -- AMAZON-02, US
43	103.104.136.0/24	6356	0.08%	136867 -- IDNIC-TELKOMTELSTRA-AS-ID PT. Teltranet Aplikasi Solusi Telkomtelstra, ID
44	130.137.28.0/24	6341	0.08%	16509 -- AMAZON-02, US
45	130.137.227.0/24	6326	0.08%	16509 -- AMAZON-02, US
46	130.137.127.0/24	6324	0.08%	16509 -- AMAZON-02, US
47	173.82.129.0/24	6298	0.08%	16509 -- AMAZON-02, US
48	130.137.124.0/24	6289	0.08%	16509 -- AMAZON-02, US
49	130.137.26.0/24	6272	0.08%	16509 -- AMAZON-02, US
50	130.137.111.0/24	6252	0.08%	16509 -- AMAZON-02, US
Total		368755	4.47%

14 Day BGP Profile: 6-December-2025 00:00 - 19-December-2025 23:59 (UTC+1000)

Number of BGP Update Messages:	19404803
Number of Prefix Updates:	8007303
Number of Prefix Withdrawals:	315772
Average Prefixes per BGP Update:	0.43
Average BGP Update Messages per second:	16.04
Average Prefix Updates per second:	6.88
Peak BGP Update Message Rate per second:	31703	(07:40:02 Mon, 8-Dec-2025)
Peak Prefix Update Rate per second:	1283	(00:42:35 Sat, 13-Dec-2025)
Peak Prefix Withdraw Rate per second:	26225	(11:31:16 Wed, 10-Dec-2025)
Prefix Count:	1065817
Updated Prefix Count:	607871
Stable Prefix Count:	457946
Origin AS Count:	77696
Updated Origin AS Count:	53987
Stable Origin AS Count:	23709
Unique Path Count:	567844
Updated Path Count:	400061
Stable Path Count:	167783

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.