The BGP Instability Report

The BGP Instability Report is updated daily. This report
was generated on 01 January 2026 06:20 (UTC+1000)

50 Most active ASes for the past 14 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	5413	495392	6.61%	97	5107.13	WAVENET-AS5413, GB
2	16509	329999	4.41%	14228	23.19	AMAZON-02, US
3	8151	140340	1.87%	12758	11.00	UNINET, MX
4	12252	123866	1.65%	703	176.20	America Movil Peru S.A.C., PE
5	7821	72056	0.96%	17	4238.59	ZAYO-MN, US
6	36903	61679	0.82%	1261	48.91	MT-MPLS, MA
7	15766	57101	0.76%	15	3806.73	DOMICILIUM-AS, IM
8	18403	56421	0.75%	4594	12.28	FPT-AS-AP FPT Telecom Company, VN
9	335	55931	0.75%	224	249.69	DNIC-ASBLK-00306-00371, US
10	4837	48584	0.65%	1031	47.12	CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN
11	10620	46824	0.63%	3434	13.64	Telmex Colombia S.A., CO
12	39891	39726	0.53%	4969	7.99	ALJAWWALSTC-AS, SA
13	9829	34777	0.46%	1862	18.68	BSNL-NIB National Internet Backbone, IN
14	212477	34613	0.46%	144	240.37	ROYALE-AS, NL
15	31148	28708	0.38%	554	51.82	FREENET_LLC, UA
16	9808	28647	0.38%	13537	2.12	CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
17	13188	27942	0.37%	1607	17.39	TRIOLAN, UA
18	197207	25016	0.33%	1029	24.31	MCCI-AS, IR
19	647	24229	0.32%	439	55.19	DNIC-ASBLK-00616-00665, US
20	24532	24024	0.32%	53	453.28	INET-AS-ID PT. Inet Global Indo, ID
21	37294	23554	0.31%	142	165.87	TNM, MW
22	36914	23281	0.31%	582	40.00	KENET-AS, KE
23	2609	23072	0.31%	90	256.36	TN-BB-AS Tunisia BackBone AS, TN
24	58224	22280	0.30%	1172	19.01	TCI, IR
25	20473	21368	0.29%	1409	15.17	AS-VULTR, US
26	8452	21337	0.28%	1705	12.51	TE-AS TE-AS, EG
27	6147	20906	0.28%	1266	16.51	Telefonica del Peru S.A.A., PE
28	7459	20701	0.28%	1526	13.57	GRANDECOM-AS1, US
29	8866	20090	0.27%	973	20.65	VIVACOM-AS BULGARIA, BG
30	8369	19991	0.27%	121	165.21	INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
31	14754	19318	0.26%	474	40.76	TELECOMUNICACIONES DE GUATEMALA, SOCIEDAD ANONIMA, GT
32	11492	19229	0.26%	4692	4.10	CABLEONE, US
33	328608	18384	0.25%	552	33.30	Africa-on-Cloud-AS, ZA
34	3303	18095	0.24%	255	70.96	SWISSCOM Swisscom Switzerland Ltd, CH
35	7552	17770	0.24%	4062	4.37	VIETEL-AS-AP Viettel Group, VN
36	17561	17649	0.24%	3477	5.08	LCS-AS-AP LARUS Limited, HK
37	28227	17514	0.23%	46	380.74	NOVACIA TECNOLOGIA E TELECOMUNICACOES LTDA, BR
38	45899	16249	0.22%	3335	4.87	VNPT-AS-VN VNPT Corp, VN
39	24835	15872	0.21%	1982	8.01	RAYA-AS, EG
40	40138	15358	0.21%	5	3071.60	MDNET, US
41	8613	15014	0.20%	3	5004.67	WAVENET-AS8613, GB
42	55410	14874	0.20%	1177	12.64	VIL-AS-AP Vodafone Idea Ltd, IN
43	10429	14827	0.20%	177	83.77	TELEFONICA BRASIL S.A, BR
44	6503	14753	0.20%	730	20.21	Axtel, S.A.B. de C.V., MX
45	9009	14721	0.20%	4014	3.67	M247, RO
46	136255	14551	0.19%	125	116.41	TIMCL-AS-AP Telecom International Myanmar Co., Ltd, MM
47	44244	14363	0.19%	758	18.95	IRANCELL-AS, IR
48	15399	14325	0.19%	577	24.83	WANANCHI-, KE
49	149038	14256	0.19%	2	7128.00	UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
50	5371	14122	0.19%	308	45.85	DNIC-ASBLK-05120-05376, US
Total		2293699	30.62%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	208907	7932.0	0.11%	1	7932	RISING-BRIDGE-TECHNOLOGY, GB
2	149038	7128.0	0.19%	2	14256	UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
3	27892	6195.0	0.08%	1	6195	Universidad del Zulia, VE
4	56644	5219.0	0.07%	2	5219	SYNFS-AS, GB
5	15766	5191.0	0.76%	15	57101	DOMICILIUM-AS, IM
6	5413	5107.1	6.61%	97	495392	WAVENET-AS5413, GB
7	41383	5008.0	0.13%	8	10016	WOLASN, GB
8	197320	5008.0	0.07%	1	5008	NPA-AS, GB
9	8613	5004.7	0.20%	3	15014	WAVENET-AS8613, GB
10	265566	4800.0	0.06%	3	4800	TELESISTEMAS PENINSULARES SA DE CV, MX
11	213812	4593.5	0.12%	2	9187	ALFATEH, SY
12	7821	4238.6	0.96%	17	72056	ZAYO-MN, US
13	7954	4141.0	0.17%	3	12423	IMMENSE-NETWORKS, US
14	33764	3875.0	0.05%	3	3875	AFRINIC-ZA-JNB-AS, MU
15	29469	3536.0	0.05%	1	3536	GTU Khmelnitsky, Ukraine, UA
16	271217	3535.0	0.09%	4	7070	Nova Info Internet e Telecomunicacoes LTDA, BR
17	8791	3346.7	0.13%	3	10040	FOEHN, GB
18	40138	3071.6	0.21%	5	15358	MDNET, US
19	51897	3071.0	0.04%	1	3071	MIHAN, IR
20	212274	2708.0	0.04%	1	2708	ELTRAKSA-AS, GR
21	57670	2313.8	0.19%	6	13883	ASOPENWAY, UA
22	12357	2278.2	0.15%	17	11391	COMUNITEL SPAIN, ES
23	136867	2165.0	0.09%	3	6495	IDNIC-TELKOMTELSTRA-AS-ID PT. Teltranet Aplikasi Solusi Telkomtelstra, ID
24	41538	1983.0	0.03%	2	1983	INSPIRED-AS, GB
25	21570	1903.0	0.03%	94	1903	ACI-1, CA
26	13341	1714.0	0.09%	5	6856	TRANQUILITY, US
27	206467	1672.7	0.07%	3	5018	PROTECH-COMMS, GB
28	150512	1565.5	0.04%	2	3131	IDNIC-MASKOMINDONESIARAYA-AS-ID PT Maskom Indonesia Raya, ID
29	329613	1495.0	0.02%	1	1495	Iris-Smart-Technologies, NG
30	200070	1356.0	0.02%	4	1356	CZNIC-AS2, CZ
31	54689	1335.0	0.02%	1	1335	UC-WILLIAMSBURG-ASN, US
32	265112	1304.3	0.12%	7	9130	DIGITO TELECOMUNICACOES E INFORMATICA LTDA, BR
33	29874	1265.8	0.07%	4	5063	CAMBRI-AS1, US
34	395327	1191.0	0.02%	1	1191	BAYFEDCU, US
35	17794	1187.3	0.05%	13	3562	HTCL-ORANGE-HK-AP Hutchison Telephone Company Limited, HK
36	136225	1185.3	0.05%	3	3556	SMARTTELECOM-AS-AP Smart Telecom, PK
37	57285	1161.0	0.02%	1	1161	UKRINFOSYSTEMS-AS, UA
38	136501	1155.5	0.09%	21	6933	HKBNES-AS-AP HKBN Enterprise Solutions HK Limited, HK
39	29382	1111.5	0.03%	2	2223	UKRINFOSYSTEMS-AS, UA
40	329104	1102.0	0.01%	1	1102	AL14-AS, RW
41	28657	1087.3	0.04%	3	3262	MD Brasil - Tecnologia da Informacao Ltda, BR
42	399889	1073.5	0.03%	2	2147	NET-FRONT-001, US
43	204318	1038.0	0.01%	1	1038	BGPTOOLS-QA, GB
44	329627	1017.3	0.04%	3	3052	Wingu-Tanzania, TZ
45	137258	984.0	0.01%	1	984	SHIRAZI-AS-AP Shirazi Investments Pvt Ltd., PK
46	264126	945.0	0.04%	6	2835	SIX INTERNET LTDA, BR
47	265046	933.7	0.04%	3	2801	NET-MAIS INFORMATICA, BR
48	12654	917.5	0.17%	22	12845	RIPE-NCC-RIS-AS Reseaux IP Europeens Network Coordination Centre RIPE NCC, NL
49	213654	836.0	0.02%	2	1672	AS209737, TR
50	149614	824.0	0.01%
Total		132810.4	11.76%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	207.167.116.0/22	12419	0.16%	7954 -- IMMENSE-NETWORKS, US
2	124.195.190.0/24	11392	0.15%	38684 -- CMBDAEJEON-AS-KR CMB Daejeon Broadcasting Co,.Ltd, KR
3	130.137.231.0/24	10923	0.14%	16509 -- AMAZON-02, US
4	55.67.56.0/24	10328	0.13%	335 -- DNIC-ASBLK-00306-00371, US
5	55.27.56.0/24	10321	0.13%	335 -- DNIC-ASBLK-00306-00371, US
6	55.27.217.0/24	10309	0.13%	335 -- DNIC-ASBLK-00306-00371, US
7	55.74.57.0/24	10295	0.13%	335 -- DNIC-ASBLK-00306-00371, US
8	55.74.56.0/24	10291	0.13%	335 -- DNIC-ASBLK-00306-00371, US
9	186.83.117.0/24	8315	0.11%	10620 -- Telmex Colombia S.A., CO
10	130.137.108.0/24	7974	0.10%	16509 -- AMAZON-02, US
11	44.31.52.0/24	7932	0.10%	208907 -- RISING-BRIDGE-TECHNOLOGY, GB
12	173.82.125.0/24	7775	0.10%	16509 -- AMAZON-02, US
13	130.137.230.0/24	7707	0.10%	16509 -- AMAZON-02, US
14	130.137.12.0/24	7690	0.10%	16509 -- AMAZON-02, US
15	103.177.87.0/24	7215	0.09%	149038 -- UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
16	186.251.129.0/24	7200	0.09%	53225 -- IPGLOBE INTERNET LTDA, BR
17	143.0.241.0/24	7056	0.09%	271217 -- Nova Info Internet e Telecomunicacoes LTDA, BR
18	103.177.86.0/24	7041	0.09%	149038 -- UCGCL-AS-AP UNIQUE COMM GROUP COMPANY LIMITED, MM
19	173.82.66.0/24	6956	0.09%	16509 -- AMAZON-02, US
20	130.137.219.0/24	6852	0.09%	16509 -- AMAZON-02, US
21	199.47.232.0/22	6847	0.09%	13341 -- TRANQUILITY, US
22	130.137.80.0/24	6797	0.09%	16509 -- AMAZON-02, US
23	84.205.66.0/24	6778	0.09%	12654 -- RIPE-NCC-RIS-AS Reseaux IP Europeens Network Coordination Centre RIPE NCC, NL
24	130.137.79.0/24	6689	0.09%	16509 -- AMAZON-02, US
25	130.137.118.0/24	6656	0.09%	8987 -- AWS-GOVCLOUD AWS-GOVCLOUD, IE
26	195.114.123.0/24	6647	0.09%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
27	193.105.156.0/24	6619	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
28	103.104.136.0/24	6486	0.08%	136867 -- IDNIC-TELKOMTELSTRA-AS-ID PT. Teltranet Aplikasi Solusi Telkomtelstra, ID
29	173.82.63.0/24	6468	0.08%	16509 -- AMAZON-02, US
30	173.82.108.0/24	6452	0.08%	16509 -- AMAZON-02, US
31	195.114.122.0/24	6429	0.08%	8369 -- INTERSVYAZ-AS 38-B, Komsomolsky prospekt, RU
32	173.82.67.0/24	6416	0.08%	16509 -- AMAZON-02, US
33	130.137.28.0/24	6286	0.08%	16509 -- AMAZON-02, US
34	177.46.36.0/24	6195	0.08%	28135 -- ASSOCIACAO NACIONAL PARA INCLUSAO DIGITAL - ANID, BR
35	190.170.0.0/18	6195	0.08%	27892 -- Universidad del Zulia, VE
36	130.137.124.0/24	6171	0.08%	16509 -- AMAZON-02, US
37	130.137.227.0/24	6115	0.08%	16509 -- AMAZON-02, US
38	130.137.99.0/24	6089	0.08%	16509 -- AMAZON-02, US
39	130.137.105.0/24	6077	0.08%	16509 -- AMAZON-02, US
40	130.137.140.0/24	6063	0.08%	16509 -- AMAZON-02, US
41	130.137.111.0/24	6059	0.08%	16509 -- AMAZON-02, US
42	130.137.150.0/24	6052	0.08%	16509 -- AMAZON-02, US
43	130.137.26.0/24	6051	0.08%	16509 -- AMAZON-02, US
44	173.82.129.0/24	6051	0.08%	16509 -- AMAZON-02, US
45	130.137.47.0/24	6047	0.08%	16509 -- AMAZON-02, US
46	130.137.130.0/24	6040	0.08%	16509 -- AMAZON-02, US
47	130.137.89.0/24	6025	0.08%	14618 -- AMAZON-AES, US
48	130.137.127.0/24	6011	0.08%	16509 -- AMAZON-02, US
49	130.137.16.0/24	6001	0.08%	16509 -- AMAZON-02, US
50	130.137.90.0/24	5984	0.08%	16509 -- AMAZON-02, US
Total		364787	4.71%

14 Day BGP Profile: 18-December-2025 00:00 - 31-December-2025 23:59 (UTC+1000)

Number of BGP Update Messages:	17411523
Number of Prefix Updates:	7491375
Number of Prefix Withdrawals:	296436
Average Prefixes per BGP Update:	0.45
Average BGP Update Messages per second:	14.39
Average Prefix Updates per second:	6.44
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:	32624	(22:34:11 Sun, 21-Dec-2025)
Prefix Count:	1066536
Updated Prefix Count:	631355
Stable Prefix Count:	435181
Origin AS Count:	77698
Updated Origin AS Count:	57185
Stable Origin AS Count:	20513
Unique Path Count:	517401
Updated Path Count:	350545
Stable Path Count:	166856

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.