The BGP Instability Report

The BGP Instability Report is updated daily. This report
was generated on 31 December 2025 06:19 (UTC+1000)

50 Most active ASes for the past 14 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	5413	471914	6.16%	97	4865.09	WAVENET-AS5413, GB
2	16509	325466	4.25%	14191	22.93	AMAZON-02, US
3	8151	143133	1.87%	12757	11.22	UNINET, MX
4	12252	106660	1.39%	701	152.15	America Movil Peru S.A.C., PE
5	7821	72025	0.94%	17	4236.76	ZAYO-MN, US
6	18403	66465	0.87%	4591	14.48	FPT-AS-AP FPT Telecom Company, VN
7	36903	59468	0.78%	1261	47.16	MT-MPLS, MA
8	15766	55785	0.73%	15	3719.00	DOMICILIUM-AS, IM
9	335	54996	0.72%	224	245.52	DNIC-ASBLK-00306-00371, US
10	10620	48330	0.63%	3435	14.07	Telmex Colombia S.A., CO
11	39891	38702	0.51%	4969	7.79	ALJAWWALSTC-AS, SA
12	9829	38587	0.50%	1862	20.72	BSNL-NIB National Internet Backbone, IN
13	212477	32082	0.42%	144	222.79	ROYALE-AS, NL
14	31148	28857	0.38%	554	52.09	FREENET_LLC, UA
15	58224	28813	0.38%	1170	24.63	TCI, IR
16	9808	28679	0.37%	13538	2.12	CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
17	197207	27335	0.36%	1023	26.72	MCCI-AS, IR
18	6147	25344	0.33%	1266	20.02	Telefonica del Peru S.A.A., PE
19	24532	24867	0.32%	53	469.19	INET-AS-ID PT. Inet Global Indo, ID
20	13188	23932	0.31%	1607	14.89	TRIOLAN, UA
21	36914	23913	0.31%	582	41.09	KENET-AS, KE
22	7459	23387	0.31%	1526	15.33	GRANDECOM-AS1, US
23	2609	23316	0.30%	90	259.07	TN-BB-AS Tunisia BackBone AS, TN
24	17561	23305	0.30%	3438	6.78	LCS-AS-AP LARUS Limited, HK
25	45899	22776	0.30%	3336	6.83	VNPT-AS-VN VNPT Corp, VN
26	37294	22526	0.29%	142	158.63	TNM, MW
27	11492	21987	0.29%	4692	4.69	CABLEONE, US
28	8452	21823	0.29%	1705	12.80	TE-AS TE-AS, EG
29	8866	20897	0.27%	973	21.48	VIVACOM-AS BULGARIA, BG
30	20473	20871	0.27%	1409	14.81	AS-VULTR, US
31	647	20217	0.26%	438	46.16	DNIC-ASBLK-00616-00665, US
32	8369	20079	0.26%	121	165.94	INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
33	14754	20061	0.26%	473	42.41	TELECOMUNICACIONES DE GUATEMALA, SOCIEDAD ANONIMA, GT
34	7552	19360	0.25%	4059	4.77	VIETEL-AS-AP Viettel Group, VN
35	24835	18386	0.24%	1982	9.28	RAYA-AS, EG
36	3303	17782	0.23%	255	69.73	SWISSCOM Swisscom Switzerland Ltd, CH
37	328608	17308	0.23%	552	31.36	Africa-on-Cloud-AS, ZA
38	44244	17039	0.22%	767	22.22	IRANCELL-AS, IR
39	11830	16642	0.22%	1992	8.35	Instituto Costarricense de Electricidad y Telecom., CR
40	55410	15708	0.21%	1177	13.35	VIL-AS-AP Vodafone Idea Ltd, IN
41	6503	15651	0.20%	730	21.44	Axtel, S.A.B. de C.V., MX
42	28227	15426	0.20%	46	335.35	NOVACIA TECNOLOGIA E TELECOMUNICACOES LTDA, BR
43	42337	14640	0.19%	694	21.10	RESPINA-AS, IR
44	9009	14640	0.19%	4005	3.66	M247, RO
45	5371	14618	0.19%	295	49.55	DNIC-ASBLK-05120-05376, US
46	11664	14453	0.19%	1374	10.52	Techtel LMDS Comunicaciones Interactivas S.A., AR
47	10429	14303	0.19%	177	80.81	TELEFONICA BRASIL S.A, BR
48	149038	14167	0.19%	2	7083.50	UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
49	36352	14148	0.18%	2825	5.01	AS-COLOCROSSING, US
50	57670	14072	0.18%	6	2345.33	ASOPENWAY, UA
Total		2254941	29.43%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	208907	7390.0	0.10%	1	7390	RISING-BRIDGE-TECHNOLOGY, GB
2	149038	7083.5	0.19%	2	14167	UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
3	27892	7041.0	0.09%	1	7041	Universidad del Zulia, VE
4	56644	5128.0	0.07%	2	5128	SYNFS-AS, GB
5	15766	5071.4	0.73%	15	55785	DOMICILIUM-AS, IM
6	5413	4865.1	6.16%	97	471914	WAVENET-AS5413, GB
7	41383	4641.0	0.12%	8	9282	WOLASN, GB
8	197320	4623.0	0.06%	1	4623	NPA-AS, GB
9	8613	4620.3	0.18%	3	13861	WAVENET-AS8613, GB
10	213812	4448.0	0.12%	2	8896	ALFATEH, SY
11	7821	4236.8	0.94%	17	72025	ZAYO-MN, US
12	7954	4133.7	0.16%	3	12401	IMMENSE-NETWORKS, US
13	33764	3858.0	0.05%	3	3858	AFRINIC-ZA-JNB-AS, MU
14	29469	3595.0	0.05%	1	3595	GTU Khmelnitsky, Ukraine, UA
15	8791	3098.0	0.12%	3	9294	FOEHN, GB
16	51897	3093.0	0.04%	1	3093	MIHAN, IR
17	40138	2798.4	0.18%	5	13992	MDNET, US
18	212274	2417.0	0.03%	1	2417	ELTRAKSA-AS, GR
19	57670	2345.3	0.18%	6	14072	ASOPENWAY, UA
20	265566	2338.5	0.06%	3	4677	TELESISTEMAS PENINSULARES SA DE CV, MX
21	271217	2329.0	0.09%	4	6987	Nova Info Internet e Telecomunicacoes LTDA, BR
22	136867	2157.3	0.08%	3	6472	IDNIC-TELKOMTELSTRA-AS-ID PT. Teltranet Aplikasi Solusi Telkomtelstra, ID
23	12357	2147.0	0.14%	17	10735	COMUNITEL SPAIN, ES
24	21570	1909.0	0.02%	94	1909	ACI-1, CA
25	41538	1840.0	0.02%	2	1840	INSPIRED-AS, GB
26	13341	1718.0	0.09%	5	6872	TRANQUILITY, US
27	150512	1561.5	0.04%	2	3123	IDNIC-MASKOMINDONESIARAYA-AS-ID PT Maskom Indonesia Raya, ID
28	206467	1551.7	0.06%	3	4655	PROTECH-COMMS, GB
29	265112	1402.9	0.13%	7	9820	DIGITO TELECOMUNICACOES E INFORMATICA LTDA, BR
30	329613	1339.0	0.02%	1	1339	Iris-Smart-Technologies, NG
31	54689	1332.0	0.02%	1	1332	UC-WILLIAMSBURG-ASN, US
32	200070	1277.0	0.02%	4	1277	CZNIC-AS2, CZ
33	136225	1185.3	0.05%	3	3556	SMARTTELECOM-AS-AP Smart Telecom, PK
34	29874	1169.5	0.06%	4	4678	CAMBRI-AS1, US
35	57285	1168.0	0.02%	1	1168	UKRINFOSYSTEMS-AS, UA
36	395327	1161.0	0.02%	1	1161	BAYFEDCU, US
37	28657	1141.3	0.04%	3	3424	MD Brasil - Tecnologia da Informacao Ltda, BR
38	29382	1112.5	0.03%	2	2225	UKRINFOSYSTEMS-AS, UA
39	136501	1103.3	0.09%	21	6620	HKBNES-AS-AP HKBN Enterprise Solutions HK Limited, HK
40	204318	1039.0	0.01%	1	1039	BGPTOOLS-QA, GB
41	329104	1002.0	0.01%	1	1002	AL14-AS, RW
42	329627	989.7	0.04%	3	2969	Wingu-Tanzania, TZ
43	399889	957.5	0.03%	2	1915	NET-FRONT-001, US
44	264126	945.0	0.04%	6	2835	SIX INTERNET LTDA, BR
45	12654	917.3	0.17%	22	12842	RIPE-NCC-RIS-AS Reseaux IP Europeens Network Coordination Centre RIPE NCC, NL
46	205605	911.0	0.01%	1	911	ID-PROCESSING, AM
47	213654	855.0	0.02%	2	1710	AS209737, TR
48	132562	850.5	0.02%	2	1701	KOMALNET-AS-IN Komal Network Service Private Limited, IN
49	149614	809.0	0.01%	1	809	TSIIPL-AS-IN TRANSACTION SOLUTIONS INTERNATIONAL INDIA PRIVATE LIMITED, IN
50	45304	809.0	0.04%
Total		125515.3	11.07%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	207.167.116.0/22	12397	0.16%	7954 -- IMMENSE-NETWORKS, US
2	124.195.190.0/24	11481	0.14%	38684 -- CMBDAEJEON-AS-KR CMB Daejeon Broadcasting Co,.Ltd, KR
3	130.137.231.0/24	10911	0.14%	16509 -- AMAZON-02, US
4	55.67.56.0/24	10305	0.13%	335 -- DNIC-ASBLK-00306-00371, US
5	55.74.57.0/24	10299	0.13%	335 -- DNIC-ASBLK-00306-00371, US
6	55.27.56.0/24	10299	0.13%	335 -- DNIC-ASBLK-00306-00371, US
7	55.27.217.0/24	10293	0.13%	335 -- DNIC-ASBLK-00306-00371, US
8	55.74.56.0/24	10293	0.13%	335 -- DNIC-ASBLK-00306-00371, US
9	186.83.117.0/24	8317	0.10%	10620 -- Telmex Colombia S.A., CO
10	130.137.108.0/24	7967	0.10%	16509 -- AMAZON-02, US
11	173.82.125.0/24	7789	0.10%	16509 -- AMAZON-02, US
12	130.137.12.0/24	7691	0.10%	16509 -- AMAZON-02, US
13	130.137.230.0/24	7682	0.10%	16509 -- AMAZON-02, US
14	44.31.52.0/24	7390	0.09%	208907 -- RISING-BRIDGE-TECHNOLOGY, GB
15	103.177.87.0/24	7171	0.09%	149038 -- UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
16	186.251.129.0/24	7114	0.09%	53225 -- IPGLOBE INTERNET LTDA, BR
17	190.170.0.0/18	7041	0.09%	27892 -- Universidad del Zulia, VE
18	103.177.86.0/24	6996	0.09%	149038 -- UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
19	143.0.241.0/24	6969	0.09%	271217 -- Nova Info Internet e Telecomunicacoes LTDA, BR
20	173.82.66.0/24	6960	0.09%	16509 -- AMAZON-02, US
21	130.137.219.0/24	6867	0.09%	16509 -- AMAZON-02, US
22	199.47.232.0/22	6863	0.09%	13341 -- TRANQUILITY, US
23	84.205.66.0/24	6801	0.09%	12654 -- RIPE-NCC-RIS-AS Reseaux IP Europeens Network Coordination Centre RIPE NCC, NL
24	130.137.80.0/24	6786	0.09%	16509 -- AMAZON-02, US
25	195.114.123.0/24	6693	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
26	130.137.118.0/24	6688	0.08%	8987 -- AWS-GOVCLOUD AWS-GOVCLOUD, IE
27	130.137.79.0/24	6667	0.08%	16509 -- AMAZON-02, US
28	193.105.156.0/24	6606	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
29	173.82.108.0/24	6507	0.08%	16509 -- AMAZON-02, US
30	195.114.122.0/24	6484	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
31	173.82.63.0/24	6480	0.08%	16509 -- AMAZON-02, US
32	103.104.136.0/24	6452	0.08%	136867 -- IDNIC-TELKOMTELSTRA-AS-ID PT. Teltranet Aplikasi Solusi Telkomtelstra, ID
33	173.82.67.0/24	6404	0.08%	16509 -- AMAZON-02, US
34	130.137.28.0/24	6268	0.08%	16509 -- AMAZON-02, US
35	177.46.36.0/24	6252	0.08%	28135 -- ASSOCIACAO NACIONAL PARA INCLUSAO DIGITAL - ANID, BR
36	130.137.124.0/24	6152	0.08%	16509 -- AMAZON-02, US
37	130.137.105.0/24	6128	0.08%	16509 -- AMAZON-02, US
38	130.137.99.0/24	6127	0.08%	16509 -- AMAZON-02, US
39	130.137.227.0/24	6098	0.08%	16509 -- AMAZON-02, US
40	173.82.129.0/24	6091	0.08%	16509 -- AMAZON-02, US
41	130.137.140.0/24	6075	0.08%	16509 -- AMAZON-02, US
42	130.137.26.0/24	6051	0.08%	16509 -- AMAZON-02, US
43	130.137.150.0/24	6047	0.08%	16509 -- AMAZON-02, US
44	130.137.47.0/24	6046	0.08%	16509 -- AMAZON-02, US
45	130.137.111.0/24	6044	0.08%	16509 -- AMAZON-02, US
46	130.137.130.0/24	6038	0.08%	16509 -- AMAZON-02, US
47	130.137.16.0/24	6038	0.08%	16509 -- AMAZON-02, US
48	130.137.89.0/24	6023	0.08%	14618 -- AMAZON-AES, US
49	130.137.127.0/24	6020	0.08%	16509 -- AMAZON-02, US
50	130.137.90.0/24	5970	0.08%	16509 -- AMAZON-02, US
Total		365131	4.66%

14 Day BGP Profile: 17-December-2025 00:00 - 30-December-2025 23:59 (UTC+1000)

Number of BGP Update Messages:	17858203
Number of Prefix Updates:	7655226
Number of Prefix Withdrawals:	304382
Average Prefixes per BGP Update:	0.45
Average BGP Update Messages per second:	14.76
Average Prefix Updates per second:	6.58
Peak BGP Update Message Rate per second:	71547	(11:15:45 Tue, 23-Dec-2025)
Peak Prefix Update Rate per second:	1342	(03:10:37 Mon, 22-Dec-2025)
Peak Prefix Withdraw Rate per second:	32514	(22:34:11 Sun, 21-Dec-2025)
Prefix Count:	1066859
Updated Prefix Count:	645770
Stable Prefix Count:	421089
Origin AS Count:	77695
Updated Origin AS Count:	57861
Stable Origin AS Count:	19834
Unique Path Count:	526972
Updated Path Count:	362460
Stable Path Count:	164512

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.