The BGP IPv6 Instability Report

This report is updated daily. The current report
was generated on 1 January 2026 01:18 (UTC+1000)

50 Most active ASes for the past 14 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	24158	2828104	32.29%	504	5611.32	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
2	34600	1623928	18.54%	1	1623928.00	AS6GNET, PL
3	7552	629393	7.19%	3977	158.26	VIETEL-AS-AP Viettel Group, VN
4	38841	210673	2.41%	38	5544.03	KBRO-AS-TW kbro CO. Ltd., TW
5	202256	205215	2.34%	770	266.51	LAWLIETNET, CN
6	207432	150182	1.71%	546	275.06	CORESTREAM, US
7	199340	118875	1.36%	3790	31.37	HONG-GUANWAN, HK
8	28126	108480	1.24%	26	4172.31	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
9	39891	98383	1.12%	2058	47.81	ALJAWWALSTC-AS, SA
10	16509	93053	1.06%	5336	17.44	AMAZON-02, US
11	40138	84135	0.96%	37	2273.92	MDNET, US
12	24164	80608	0.92%	12	6717.33	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
13	28649	73079	0.83%	77	949.08	Desktop Sigmanet Comunicacao Multimidia SA, BR
14	211894	67850	0.77%	8	8481.25	UNGLEICH-PLACE18, CH
15	21351	46062	0.53%	17	2709.53	CANALPLUSTELECOM, GP
16	9924	45802	0.52%	11	4163.82	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
17	8386	44469	0.51%	20	2223.45	KOCNET, TR
18	28458	42381	0.48%	2	21190.50	IENTC S DE RL DE CV, MX
19	9674	40217	0.46%	38	1058.34	FET-TW Far EastTone Telecommunication Co., Ltd., TW
20	396509	33984	0.39%	12	2832.00	LETSCLOUD, US
21	28598	32623	0.37%	14	2330.21	DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
22	199553	32285	0.37%	6	5380.83	UNGLEICH-PLACE5, CH
23	204508	29593	0.34%	18	1644.06	MLGT, IT
24	134094	28890	0.33%	6	4815.00	SERVERFIELD-AS Serverfield Co., Ltd., TW
25	205651	26749	0.31%	1	26749.00	CATOFES, CN
26	38266	26066	0.30%	1378	18.92	VIL-AS-AP Vodafone Idea Ltd, IN
27	274743	25090	0.29%	7	3584.29	FASTWEB TELECOMUNICACOES, BR
28	18429	23461	0.27%	3	7820.33	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
29	24165	23042	0.26%	3	7680.67	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
30	262448	21474	0.25%	11	1952.18	DIALHOST INTERNET EIRELI, BR
31	139341	20814	0.24%	178	116.93	ACE-AS-AP ACE, SG
32	10103	20561	0.23%	12	1713.42	HKBN-AS-AP HK Broadband Network Ltd., HK
33	9287	20245	0.23%	8	2530.62	TIDCC-AS-AP True Internet Data Center Company Limited, TH
34	204210	19126	0.22%	4	4781.50	ZEUSPACKAGINGLTD, IE
35	12252	18758	0.21%	456	41.14	America Movil Peru S.A.C., PE
36	151810	18523	0.21%	4	4630.75	PHYLAXISINC-AS-AP Phylaxis Korea, KR
37	214450	18236	0.21%	2	9118.00	OGL-AS, DE
38	203664	17956	0.21%	1	17956.00	LANXING-AS, CN
39	24173	17888	0.20%	262	68.27	NETNAM-AS-AP Netnam Company, VN
40	45271	17275	0.20%	1250	13.82	VIL-AS-AP Vodafone Idea Ltd, IN
41	205157	17260	0.20%	5	3452.00	CIDNOC, US
42	209898	16684	0.19%	2	8342.00	UNGLEICH-UNGLEICH-UPSTREAM, CH
43	24163	15818	0.18%	3	5272.67	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
44	48635	15682	0.18%	21	746.76	CLDIN-NL Your Hosting B.V. part of Your.Online, NL
45	30058	15315	0.17%	143	107.10	FDCSERVERS, US
46	12041	15093	0.17%	228	66.20	AS-AFILIAS1, US
47	213092	14774	0.17%	12	1231.17	MARBLEIS, GB
48	210564	14754	0.17%	1	14754.00	SWANTZTER-AS, SE
49	21664	13684	0.16%	39	350.87	AMZN-BYOASN, US
50	13335	13660	0.16%	2988	4.57	CLOUDFLARENET, US
Total		7236252	82.63%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	34600	1623928.0	18.54%	1	1623928	AS6GNET, PL
2	205651	26749.0	0.31%	1	26749	CATOFES, CN
3	28458	21190.5	0.48%	2	42381	IENTC S DE RL DE CV, MX
4	204210	19126.0	0.22%	4	19126	ZEUSPACKAGINGLTD, IE
5	203664	17956.0	0.21%	1	17956	LANXING-AS, CN
6	28598	16311.5	0.37%	14	32623	DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
7	210564	14754.0	0.17%	1	14754	SWANTZTER-AS, SE
8	151650	12952.0	0.15%	1	12952	SWITCHFIBER-AS-AP Switch Fiber, PH
9	30083	10335.0	0.12%	3	10335	AS-30083-US-VELIA-NET, DE
10	214450	9118.0	0.21%	2	18236	OGL-AS, DE
11	328631	9104.0	0.10%	1	9104	BallitoISP, ZA
12	17420	8701.0	0.10%	1	8701	ACEREDC-TW Acer e-Enabling Data Center, Inc., TW
13	131143	8674.0	0.10%	1	8674	CHINATRUST-AS-TW Chinatrust Commercial Bank, TW
14	211894	8481.2	0.77%	8	67850	UNGLEICH-PLACE18, CH
15	209898	8342.0	0.19%	2	16684	UNGLEICH-UNGLEICH-UPSTREAM, CH
16	18429	7820.3	0.27%	3	23461	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
17	24165	7680.7	0.26%	3	23042	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
18	24164	7328.0	0.92%	12	80608	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
19	271944	6790.0	0.08%	1	6790	AUDIBEL TELECOMUNICACIONES S.A., AR
20	9924	6543.1	0.52%	11	45802	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
21	147039	6149.0	0.07%	1	6149	CYPREA-AS-AP Cyprea Private Limited, MV
22	38841	6019.2	2.41%	38	210673	KBRO-AS-TW kbro CO. Ltd., TW
23	24158	5611.3	32.29%	504	2828104	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
24	208948	5532.0	0.06%	3	5532	RECYCLED-CLOUD-AS, CH
25	199678	5512.0	0.06%	1	5512	AS-6RW-, RU
26	199553	5380.8	0.37%	6	32285	UNGLEICH-PLACE5, CH
27	24163	5272.7	0.18%	3	15818	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
28	6535	4918.5	0.11%	8	9837	Telmex Servicios Empresariales S.A., CL
29	134094	4815.0	0.33%	6	28890	SERVERFIELD-AS Serverfield Co., Ltd., TW
30	9671	4798.0	0.11%	2	9596	TRADEVAN-AS-AP Trade-Van Informaiton Services Co., TW
31	151810	4630.8	0.21%	4	18523	PHYLAXISINC-AS-AP Phylaxis Korea, KR
32	20915	4456.0	0.05%	1	4456	HUNDRED-PERCENT-IT, GB
33	28126	4339.2	1.24%	26	108480	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
34	400006	4301.0	0.05%	1	4301	DIGITAL-MONKS-01, US
35	21351	4187.5	0.53%	17	46062	CANALPLUSTELECOM, GP
36	138535	4121.0	0.14%	3	12363	FURDEVS-AS-AP Wu Qi, CN
37	198090	3921.0	0.04%	1	3921	ASLIBRA, IT
38	274743	3584.3	0.29%	7	25090	FASTWEB TELECOMUNICACOES, BR
39	21570	3459.0	0.04%	5	3459	ACI-1, CA
40	211645	3456.0	0.04%	1	3456	SPG, DE
41	205157	3452.0	0.20%	5	17260	CIDNOC, US
42	396509	3398.4	0.39%	12	33984	LETSCLOUD, US
43	210796	3180.0	0.07%	2	6360	BJOERN-SCHLEYER Bjoern Schleyer, DE
44	399916	3049.0	0.03%	1	3049	PACKETSTREAM-NAM, US
45	28649	2923.2	0.83%	77	73079	Desktop Sigmanet Comunicacao Multimidia SA, BR
46	24474	2907.0	0.07%	2	5814	ASNPANYCAST Nepal Internet Exchange NP Anycast, NP
47	53147	2855.5	0.07%	2	5711	FONTES SOLUCOES TECNOLOGICAS LTDA, BR
48	30362	2835.0	0.03%	1	2835	HPT-ASN, US
49	40138	2804.5	0.96%	37	84135	MDNET, US
50	199235	2796.0	0.03%
Total		1976549.2	65.39%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	2a0f:7c40::/29	1623928	18.02%	34600 -- AS6GNET, PL
2	2a02:1391:5100::/40	46046	0.51%	21351 -- CANALPLUSTELECOM, GP
3	2806:202::/32	42329	0.47%	28458 -- IENTC S DE RL DE CV, MX
4	2804:248:100::/40	32600	0.36%	28598 -- DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
5	2a0d:2904::/44	26749	0.30%	205651 -- CATOFES, CN
6	2a0c:b641:302::/47	19126	0.21%	204210 -- ZEUSPACKAGINGLTD, IE
7	2a0e:aa07:e044::/48	17957	0.20%	203664 -- LANXING-AS, CN
8	240d:c010:165::/48	17529	0.19%	139341 -- ACE-AS-AP ACE, SG
9	2a0a:e5c0:76::/48	16682	0.19%	209898 -- UNGLEICH-UNGLEICH-UPSTREAM, CH
10	2001:67c:20fc::/48	14755	0.16%	210564 -- SWANTZTER-AS, SE
11	2401:2260::/32	12952	0.14%	151650 -- SWITCHFIBER-AS-AP Switch Fiber, PH
12	2406:840:e620::/48	12322	0.14%	138535 -- FURDEVS-AS-AP Wu Qi, CN
13	2600:6c7f:9370::/44	11283	0.13%	19115 -- CHARTER-19115-DC, US
14	2a14:3f87:9800::/38	10817	0.12%	64289 -- MACARNE, US
15	2001:4541:9000::/36	10657	0.12%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
16	2605:de00:bb::/48	10335	0.11%	30083 -- AS-30083-US-VELIA-NET, DE
17	2403:82c0::/32	9807	0.11%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
18	2401:f540:7::/48	9630	0.11%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
19	2401:f540:2::/48	9629	0.11%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
20	2401:f540:1::/48	9624	0.11%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
21	2a0a:e5c1:517::/48	9447	0.10%	199553 -- UNGLEICH-PLACE5, CH
22	2a0a:e5c0:16::/48	9402	0.10%	199553 -- UNGLEICH-PLACE5, CH
23	2a0a:e5c0:45::/48	9401	0.10%	199553 -- UNGLEICH-PLACE5, CH
24	2a0a:5480:1::/48	9358	0.10%	211894 -- UNGLEICH-PLACE18, CH
25	2a0a:5480:4::/48	9357	0.10%	211894 -- UNGLEICH-PLACE18, CH
26	2a0a:5480::/48	9357	0.10%	211894 -- UNGLEICH-PLACE18, CH
27	2a0a:5480:3::/48	9338	0.10%	211894 -- UNGLEICH-PLACE18, CH
28	2a0a:5480:5::/48	9332	0.10%	211894 -- UNGLEICH-PLACE18, CH
29	2a0a:5480:1ac::/48	9331	0.10%	211894 -- UNGLEICH-PLACE18, CH
30	2a0a:5480:2::/48	9324	0.10%	211894 -- UNGLEICH-PLACE18, CH
31	2a0e:b107:19cb::/48	9159	0.10%	214450 -- OGL-AS, DE
32	2c0f:e8a8::/32	9104	0.10%	328631 -- BallitoISP, ZA
33	2001:678:658::/48	9079	0.10%	214450 -- OGL-AS, DE
34	2405:4500:d::/48	8944	0.10%	9671 -- TRADEVAN-AS-AP Trade-Van Informaiton Services Co., TW
35	2403:9f00::/32	8701	0.10%	17420 -- ACEREDC-TW Acer e-Enabling Data Center, Inc., TW
36	2405:3300::/32	8674	0.10%	131143 -- CHINATRUST-AS-TW Chinatrust Commercial Bank, TW
37	2a0d:2a00:1::/48	8628	0.10%	205157 -- CIDNOC, US
38	2a0d:2a00:2::/48	8626	0.10%	205157 -- CIDNOC, US
39	2402:7500:faff::/48	8621	0.10%	24158 -- TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
40	2407:4900:1000::/36	8531	0.09%	18429 -- EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
41	2404:2280:10a::/48	8518	0.09%	24429 -- TAOBAO Zhejiang Taobao Network Co.,Ltd, CN
42	2407:4b00:4000::/36	8329	0.09%	24163 -- UBBNET-AS-TW UNION BROADBAND NETWORK, TW
43	2001:c50::/32	8231	0.09%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
44	2407:4b00:1000::/36	8164	0.09%	24164 -- UBBNET-AS-TW UNION BROADBAND NETWORK, TW
45	2407:4b00:6000::/36	8152	0.09%	24165 -- UBBNET-AS-TW UNION BROADBAND NETWORK, TW
46	2407:4d00::/32	8122	0.09%	38841 -- KBRO-AS-TW kbro CO. Ltd., TW
47	2407:4b00:3000::/36	8035	0.09%	24164 -- UBBNET-AS-TW UNION BROADBAND NETWORK, TW
48	2001:4546:1001::/48	7933	0.09%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
49	2001:4546:1002::/48	7923	0.09%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
50	2407:4b00:5000::/36	7896	0.09%	24164 -- UBBNET-AS-TW UNION BROADBAND NETWORK, TW
Total		2227774	24.70%

14 Day BGP Update Statistics Profile: 17-December-2025 00:00 - 31-December-2025 23:59 (UTC+1000)

Number of BGP Update Messages:	23925349
Number of Prefix Changes:	26904963
Number of Prefix Updates:	23925349
Number of Prefix Withdrawals:	2979614
Average Prefixes per BGP Update:	1.12
Average BGP Update Messages per second:	19.78
Average Prefix Updates per second:	22.24
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:	872	(21:39:32 Tue, 23-Dec-2025, )
Number of RIB Prefix Updates:	8757587	(0.37 of recv'd updates)
Number of RIB Prefix Withdrawals:	256039	(0.09 of recv'd withdrawals)
Peak RIB Update Rate per second:	15253	(22:39:19 Sun, 21-Dec-2025)
Peak RIB Withdrawal Rate per second:	758	(18:03:24 Thu, 18-Dec-2025)
Seen Prefix Count:	248746
Updated Prefix Count:	156909
Stable Prefix Count:	91837
Seen Origin AS Count:	35983
Updated Origin AS Count:	28454
Stable Origin AS Count:	7529
Seen Unique Path Count:	154728
Updated Path Count:	131747
Stable Path Count:	22981

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