The BGP IPv6 Instability Report

This report is updated daily. The current report
was generated on 29 December 2025 01:17 (UTC+1000)

50 Most active ASes for the past 14 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	24158	2718366	37.91%	504	5393.58	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
2	7552	513121	7.16%	3977	129.02	VIETEL-AS-AP Viettel Group, VN
3	34600	394403	5.50%	1	394403.00	AS6GNET, PL
4	202256	207490	2.89%	770	269.47	LAWLIETNET, CN
5	38841	177832	2.48%	38	4679.79	KBRO-AS-TW kbro CO. Ltd., TW
6	28126	113716	1.59%	26	4373.69	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
7	199340	111786	1.56%	2718	41.13	HONG-GUANWAN, HK
8	16509	99112	1.38%	5380	18.42	AMAZON-02, US
9	40138	86971	1.21%	37	2350.57	MDNET, US
10	207432	80255	1.12%	546	146.99	CORESTREAM, US
11	28649	76650	1.07%	77	995.45	Desktop Sigmanet Comunicacao Multimidia SA, BR
12	211894	68588	0.96%	8	8573.50	UNGLEICH-PLACE18, CH
13	24164	61992	0.86%	12	5166.00	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
14	8386	56916	0.79%	20	2845.80	KOCNET, TR
15	21351	45248	0.63%	17	2661.65	CANALPLUSTELECOM, GP
16	204508	39661	0.55%	18	2203.39	MLGT, IT
17	28458	39108	0.55%	2	19554.00	IENTC S DE RL DE CV, MX
18	9924	34745	0.48%	11	3158.64	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
19	9674	31747	0.44%	38	835.45	FET-TW Far EastTone Telecommunication Co., Ltd., TW
20	199553	30160	0.42%	6	5026.67	UNGLEICH-PLACE5, CH
21	205651	26925	0.38%	1	26925.00	CATOFES, CN
22	28598	26430	0.37%	14	1887.86	DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
23	12041	24433	0.34%	228	107.16	AS-AFILIAS1, US
24	9287	24111	0.34%	8	3013.88	TIDCC-AS-AP True Internet Data Center Company Limited, TH
25	10103	22339	0.31%	12	1861.58	HKBN-AS-AP HK Broadband Network Ltd., HK
26	262448	22299	0.31%	20	1114.95	DIALHOST INTERNET EIRELI, BR
27	134094	21997	0.31%	6	3666.17	SERVERFIELD-AS Serverfield Co., Ltd., TW
28	139341	21830	0.30%	177	123.33	ACE-AS-AP ACE, SG
29	38266	21606	0.30%	1386	15.59	VIL-AS-AP Vodafone Idea Ltd, IN
30	213092	19817	0.28%	11	1801.55	MARBLEIS, GB
31	204210	18937	0.26%	4	4734.25	ZEUSPACKAGINGLTD, IE
32	39891	18412	0.26%	2058	8.95	ALJAWWALSTC-AS, SA
33	214450	18130	0.25%	2	9065.00	OGL-AS, DE
34	18429	17899	0.25%	3	5966.33	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
35	24165	17678	0.25%	3	5892.67	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
36	203664	17636	0.25%	1	17636.00	LANXING-AS, CN
37	205157	17156	0.24%	5	3431.20	CIDNOC, US
38	396509	16880	0.24%	8	2110.00	LETSCLOUD, US
39	45271	16682	0.23%	1250	13.35	VIL-AS-AP Vodafone Idea Ltd, IN
40	209898	16477	0.23%	2	8238.50	UNGLEICH-UNGLEICH-UPSTREAM, CH
41	24173	15294	0.21%	261	58.60	NETNAM-AS-AP Netnam Company, VN
42	151810	14743	0.21%	4	3685.75	PHYLAXISINC-AS-AP Phylaxis Korea, KR
43	210564	14609	0.20%	1	14609.00	SWANTZTER-AS, SE
44	13335	14587	0.20%	2988	4.88	CLOUDFLARENET, US
45	21664	14249	0.20%	39	365.36	AMZN-BYOASN, US
46	36183	13815	0.19%	1644	8.40	AKAMAI-AS, US
47	5416	13486	0.19%	1042	12.94	Internet Service Provider, BH
48	149500	13345	0.19%	4	3336.25	SR-AS-AP Shane Renshaw, HK
49	6535	12052	0.17%	8	1506.50	Telmex Servicios Empresariales S.A., CL
50	24163	12027	0.17%	3	4009.00	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
Total		5533748	77.18%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	34600	394403.0	5.50%	1	394403	AS6GNET, PL
2	205651	26925.0	0.38%	1	26925	CATOFES, CN
3	28458	19554.0	0.55%	2	39108	IENTC S DE RL DE CV, MX
4	203664	17636.0	0.25%	1	17636	LANXING-AS, CN
5	210564	14609.0	0.20%	1	14609	SWANTZTER-AS, SE
6	151650	9698.0	0.14%	1	9698	SWITCHFIBER-AS-AP Switch Fiber, PH
7	214450	9065.0	0.25%	2	18130	OGL-AS, DE
8	328631	8639.0	0.12%	1	8639	BallitoISP, ZA
9	211894	8573.5	0.96%	8	68588	UNGLEICH-PLACE18, CH
10	400006	8521.0	0.12%	1	8521	DIGITAL-MONKS-01, US
11	209898	8238.5	0.23%	2	16477	UNGLEICH-UNGLEICH-UPSTREAM, CH
12	271944	7053.0	0.10%	1	7053	AUDIBEL TELECOMUNICACIONES S.A., AR
13	17420	6711.0	0.09%	1	6711	ACEREDC-TW Acer e-Enabling Data Center, Inc., TW
14	131143	6698.0	0.09%	1	6698	CHINATRUST-AS-TW Chinatrust Commercial Bank, TW
15	204210	6312.3	0.26%	4	18937	ZEUSPACKAGINGLTD, IE
16	6535	6026.0	0.17%	8	12052	Telmex Servicios Empresariales S.A., CL
17	18429	5966.3	0.25%	3	17899	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
18	24165	5892.7	0.25%	3	17678	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
19	199678	5657.0	0.08%	1	5657	AS-6RW-, RU
20	24164	5635.6	0.86%	12	61992	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
21	24158	5393.6	37.91%	504	2718366	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
22	199553	5026.7	0.42%	6	30160	UNGLEICH-PLACE5, CH
23	9924	4963.6	0.48%	11	34745	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
24	52191	4823.0	0.07%	1	4823	LOCALKA-NET-AS , UA
25	9287	4822.2	0.34%	8	24111	TIDCC-AS-AP True Internet Data Center Company Limited, TH
26	38841	4806.3	2.48%	38	177832	KBRO-AS-TW kbro CO. Ltd., TW
27	28126	4548.6	1.59%	26	113716	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
28	20915	4517.0	0.06%	1	4517	HUNDRED-PERCENT-IT, GB
29	272053	4221.0	0.06%	1	4221	ANTUNES FLORES SERGIO OMAR NUEVA NET, AR
30	21351	4113.5	0.63%	17	45248	CANALPLUSTELECOM, GP
31	24163	4009.0	0.17%	3	12027	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
32	138535	3981.7	0.17%	3	11945	FURDEVS-AS-AP Wu Qi, CN
33	198090	3913.0	0.05%	1	3913	ASLIBRA, IT
34	9671	3689.0	0.10%	2	7378	TRADEVAN-AS-AP Trade-Van Informaiton Services Co., TW
35	151810	3685.8	0.21%	4	14743	PHYLAXISINC-AS-AP Phylaxis Korea, KR
36	134094	3666.2	0.31%	6	21997	SERVERFIELD-AS Serverfield Co., Ltd., TW
37	24474	3663.5	0.10%	2	7327	ASNPANYCAST Nepal Internet Exchange NP Anycast, NP
38	44297	3485.0	0.05%	1	3485	ICODIA ICODIA NETWORK INTEGRITY, FR
39	210796	3461.0	0.10%	2	6922	BJOERN-SCHLEYER Bjoern Schleyer, DE
40	205157	3431.2	0.24%	5	17156	CIDNOC, US
41	211645	3396.0	0.05%	1	3396	SPG, DE
42	21570	3338.0	0.05%	5	3338	ACI-1, CA
43	149500	3336.2	0.19%	4	13345	SR-AS-AP Shane Renshaw, HK
44	30362	3175.0	0.04%	1	3175	HPT-ASN, US
45	8386	2995.6	0.79%	20	56916	KOCNET, TR
46	53147	2943.0	0.08%	2	5886	FONTES SOLUCOES TECNOLOGICAS LTDA, BR
47	141145	2875.0	0.04%	1	2875	GIGANET-AS-ID PT Giga Digital Nusantara, ID
48	150805	2856.5	0.08%	3	5713	A-FIN-KR-AS A-FIN KOREA CORP, KR
49	262901	2839.0	0.08%	2	5678	Vcnet Provedora de Internet Ltda., BR
50	396509	2813.3	0.24%
Total		696602.4	58.03%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	2a0f:7c40::/29	394403	5.31%	34600 -- AS6GNET, PL
2	2a02:1391:5100::/40	45231	0.61%	21351 -- CANALPLUSTELECOM, GP
3	2806:202::/32	39051	0.53%	28458 -- IENTC S DE RL DE CV, MX
4	2a0d:2904::/44	26925	0.36%	205651 -- CATOFES, CN
5	2804:248:100::/40	26367	0.35%	28598 -- DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
6	2a0c:b641:302::/47	18918	0.25%	204210 -- ZEUSPACKAGINGLTD, IE
7	240d:c010:165::/48	18201	0.24%	139341 -- ACE-AS-AP ACE, SG
8	2a0e:aa07:e044::/48	17637	0.24%	203664 -- LANXING-AS, CN
9	2a0a:e5c0:76::/48	16476	0.22%	209898 -- UNGLEICH-UNGLEICH-UPSTREAM, CH
10	2001:67c:20fc::/48	14610	0.20%	210564 -- SWANTZTER-AS, SE
11	2406:840:e620::/48	11881	0.16%	138535 -- FURDEVS-AS-AP Wu Qi, CN
12	2a14:3f87:9800::/38	10507	0.14%	64289 -- MACARNE, US
13	2401:2260::/32	9698	0.13%	151650 -- SWITCHFIBER-AS-AP Switch Fiber, PH
14	2a0a:e5c1:517::/48	9367	0.13%	199553 -- UNGLEICH-PLACE5, CH
15	2a0a:5480::/48	9344	0.13%	211894 -- UNGLEICH-PLACE18, CH
16	2a0a:5480:4::/48	9343	0.13%	211894 -- UNGLEICH-PLACE18, CH
17	2a0a:5480:1::/48	9343	0.13%	211894 -- UNGLEICH-PLACE18, CH
18	2a0a:5480:3::/48	9328	0.13%	211894 -- UNGLEICH-PLACE18, CH
19	2a0a:e5c0:45::/48	9322	0.13%	199553 -- UNGLEICH-PLACE5, CH
20	2a0a:e5c0:16::/48	9322	0.13%	199553 -- UNGLEICH-PLACE5, CH
21	2a0a:5480:5::/48	9309	0.13%	211894 -- UNGLEICH-PLACE18, CH
22	2a0a:5480:1ac::/48	9307	0.13%	211894 -- UNGLEICH-PLACE18, CH
23	2a0a:5480:2::/48	9305	0.13%	211894 -- UNGLEICH-PLACE18, CH
24	2804:20fc:2000::/36	9126	0.12%	264525 -- Coelho Tecnologia, BR
25	2a0e:b107:19cb::/48	9078	0.12%	214450 -- OGL-AS, DE
26	2001:678:658::/48	9052	0.12%	214450 -- OGL-AS, DE
27	2c0f:e8a8::/32	8639	0.12%	328631 -- BallitoISP, ZA
28	2a0d:2a00:1::/48	8578	0.12%	205157 -- CIDNOC, US
29	2a0d:2a00:2::/48	8575	0.12%	205157 -- CIDNOC, US
30	2606:7040::/32	8521	0.11%	400006 -- DIGITAL-MONKS-01, US
31	2a05:4140:316::/48	8467	0.11%	204508 -- MLGT, IT
32	2001:4541:9000::/36	8114	0.11%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
33	2a05:4140:304::/48	7895	0.11%	204508 -- MLGT, IT
34	2a05:4140:380::/42	7818	0.11%	204508 -- MLGT, IT
35	2a13:aac4:1000::/36	7740	0.10%	204508 -- MLGT, IT
36	2a05:4140:333::/48	7698	0.10%	204508 -- MLGT, IT
37	2001:930:127::/48	7683	0.10%	8386 -- KOCNET, TR
38	2001:930:124::/48	7677	0.10%	8386 -- KOCNET, TR
39	2001:930:114::/48	7676	0.10%	8386 -- KOCNET, TR
40	2001:930:126::/48	7674	0.10%	8386 -- KOCNET, TR
41	2001:930:108::/48	7674	0.10%	8386 -- KOCNET, TR
42	2001:930:154::/48	7673	0.10%	8386 -- KOCNET, TR
43	2600:6c7f:9370::/44	7580	0.10%	19115 -- CHARTER-19115-DC, US
44	2403:82c0::/32	7369	0.10%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
45	2401:f540:2::/48	7332	0.10%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
46	2401:f540:7::/48	7331	0.10%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
47	2401:f540:1::/48	7327	0.10%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
48	2400:58a0:1003::/48	7062	0.09%	149500 -- SR-AS-AP Shane Renshaw, HK
49	2803:6610::/32	7053	0.09%	271944 -- AUDIBEL TELECOMUNICACIONES S.A., AR
50	2605:9cc0:c0e::/48	7015	0.09%	21664 -- AMZN-BYOASN, US 8987 -- AWS-GOVCLOUD AWS-GOVCLOUD, IE
Total		956622	12.88%

14 Day BGP Update Statistics Profile: 14-December-2025 00:00 - 28-December-2025 23:59 (UTC+1000)

Number of BGP Update Messages:	24276087
Number of Prefix Changes:	27362516
Number of Prefix Updates:	24276087
Number of Prefix Withdrawals:	3086429
Average Prefixes per BGP Update:	1.13
Average BGP Update Messages per second:	20.07
Average Prefix Updates per second:	22.62
Peak BGP Update Message Rate per second:	28913	(22:39:19 Sun, 21-Dec-2025)
Peak Prefix Update Rate per second:	28913	(22:39:19 Sun, 21-Dec-2025)
Peak Prefix Withdraw Rate per second:	994	(21:09:50 Mon, 15-Dec-2025, )
Number of RIB Prefix Updates:	7169814	(0.30 of recv'd updates)
Number of RIB Prefix Withdrawals:	264695	(0.09 of recv'd withdrawals)
Peak RIB Update Rate per second:	13550	(22:39:19 Sun, 21-Dec-2025)
Peak RIB Withdrawal Rate per second:	577	(18:03:24 Thu, 18-Dec-2025)
Seen Prefix Count:	247873
Updated Prefix Count:	175229
Stable Prefix Count:	72644
Seen Origin AS Count:	35969
Updated Origin AS Count:	29783
Stable Origin AS Count:	6186
Seen Unique Path Count:	163130
Updated Path Count:	140910
Stable Path Count:	22220

Five Minute Average of Per-Second Updated and Withdrawn Prefix Rate

Five Minute Peak of Per-Second Updated and Withdrawn Prefix Rate

Five Minute Average Per-Second Updated Prefix Rate by Update Type

Five Minute Peak of Per-Second Updated Prefix Rate by Update Type

BGP Table Activity

Cumulative Distribution of per-Prefix and per-AS Updates