The BGP IPv6 Instability Report

This report is updated daily. The current report
was generated on 31 December 2025 01:18 (UTC+1000)

50 Most active ASes for the past 14 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	24158	2828567	38.14%	504	5612.24	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
2	7552	488090	6.58%	3977	122.73	VIETEL-AS-AP Viettel Group, VN
3	34600	399462	5.39%	1	399462.00	AS6GNET, PL
4	202256	203668	2.75%	770	264.50	LAWLIETNET, CN
5	38841	196931	2.66%	38	5182.39	KBRO-AS-TW kbro CO. Ltd., TW
6	199340	116680	1.57%	3487	33.46	HONG-GUANWAN, HK
7	28126	109193	1.47%	26	4199.73	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
8	207432	100119	1.35%	546	183.37	CORESTREAM, US
9	39891	98180	1.32%	2058	47.71	ALJAWWALSTC-AS, SA
10	16509	96947	1.31%	5339	18.16	AMAZON-02, US
11	40138	85312	1.15%	37	2305.73	MDNET, US
12	28649	73609	0.99%	77	955.96	Desktop Sigmanet Comunicacao Multimidia SA, BR
13	24164	72114	0.97%	12	6009.50	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
14	211894	68584	0.92%	8	8573.00	UNGLEICH-PLACE18, CH
15	10103	52072	0.70%	12	4339.33	HKBN-AS-AP HK Broadband Network Ltd., HK
16	8386	49217	0.66%	20	2460.85	KOCNET, TR
17	21351	45958	0.62%	17	2703.41	CANALPLUSTELECOM, GP
18	9924	41578	0.56%	11	3779.82	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
19	28458	41214	0.56%	2	20607.00	IENTC S DE RL DE CV, MX
20	9674	40349	0.54%	38	1061.82	FET-TW Far EastTone Telecommunication Co., Ltd., TW
21	396509	34148	0.46%	12	2845.67	LETSCLOUD, US
22	199553	31462	0.42%	6	5243.67	UNGLEICH-PLACE5, CH
23	204508	29070	0.39%	18	1615.00	MLGT, IT
24	205651	26804	0.36%	1	26804.00	CATOFES, CN
25	28598	26341	0.36%	14	1881.50	DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
26	134094	26134	0.35%	6	4355.67	SERVERFIELD-AS Serverfield Co., Ltd., TW
27	38266	26054	0.35%	1384	18.83	VIL-AS-AP Vodafone Idea Ltd, IN
28	274743	25269	0.34%	7	3609.86	FASTWEB TELECOMUNICACOES, BR
29	262448	22573	0.30%	11	2052.09	DIALHOST INTERNET EIRELI, BR
30	9287	22353	0.30%	8	2794.12	TIDCC-AS-AP True Internet Data Center Company Limited, TH
31	139341	21191	0.29%	178	119.05	ACE-AS-AP ACE, SG
32	18429	21044	0.28%	3	7014.67	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
33	24165	20677	0.28%	3	6892.33	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
34	151810	19310	0.26%	4	4827.50	PHYLAXISINC-AS-AP Phylaxis Korea, KR
35	204210	18514	0.25%	4	4628.50	ZEUSPACKAGINGLTD, IE
36	12041	18011	0.24%	228	79.00	AS-AFILIAS1, US
37	203664	17843	0.24%	1	17843.00	LANXING-AS, CN
38	214450	17694	0.24%	2	8847.00	OGL-AS, DE
39	12252	17602	0.24%	459	38.35	America Movil Peru S.A.C., PE
40	45271	17374	0.23%	1250	13.90	VIL-AS-AP Vodafone Idea Ltd, IN
41	205157	17368	0.23%	5	3473.60	CIDNOC, US
42	209898	16611	0.22%	2	8305.50	UNGLEICH-UNGLEICH-UPSTREAM, CH
43	213092	15863	0.21%	12	1321.92	MARBLEIS, GB
44	210564	14722	0.20%	1	14722.00	SWANTZTER-AS, SE
45	17072	14528	0.20%	1413	10.28	TOTAL PLAY TELECOMUNICACIONES SA DE CV, MX
46	24173	14262	0.19%	262	54.44	NETNAM-AS-AP Netnam Company, VN
47	24163	14189	0.19%	3	4729.67	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
48	48635	13938	0.19%	21	663.71	CLDIN-NL Your Hosting B.V. part of Your.Online, NL
49	21664	13846	0.19%	39	355.03	AMZN-BYOASN, US
50	30058	13621	0.18%	143	95.25	FDCSERVERS, US
Total		5816260	78.39%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	34600	399462.0	5.39%	1	399462	AS6GNET, PL
2	205651	26804.0	0.36%	1	26804	CATOFES, CN
3	28458	20607.0	0.56%	2	41214	IENTC S DE RL DE CV, MX
4	203664	17843.0	0.24%	1	17843	LANXING-AS, CN
5	210564	14722.0	0.20%	1	14722	SWANTZTER-AS, SE
6	151650	11376.0	0.15%	1	11376	SWITCHFIBER-AS-AP Switch Fiber, PH
7	30083	10152.0	0.14%	3	10152	AS-30083-US-VELIA-NET, DE
8	328631	8857.0	0.12%	1	8857	BallitoISP, ZA
9	214450	8847.0	0.24%	2	17694	OGL-AS, DE
10	211894	8573.0	0.92%	8	68584	UNGLEICH-PLACE18, CH
11	209898	8305.5	0.22%	2	16611	UNGLEICH-UNGLEICH-UPSTREAM, CH
12	17420	7826.0	0.11%	1	7826	ACEREDC-TW Acer e-Enabling Data Center, Inc., TW
13	131143	7817.0	0.11%	1	7817	CHINATRUST-AS-TW Chinatrust Commercial Bank, TW
14	18429	7014.7	0.28%	3	21044	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
15	24165	6892.3	0.28%	3	20677	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
16	271944	6855.0	0.09%	1	6855	AUDIBEL TELECOMUNICACIONES S.A., AR
17	24164	6555.8	0.97%	12	72114	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
18	204210	6171.3	0.25%	4	18514	ZEUSPACKAGINGLTD, IE
19	9924	5939.7	0.56%	11	41578	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
20	400006	5689.0	0.08%	1	5689	DIGITAL-MONKS-01, US
21	38841	5626.6	2.66%	38	196931	KBRO-AS-TW kbro CO. Ltd., TW
22	24158	5612.2	38.14%	504	2828567	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
23	6535	5255.5	0.14%	8	10511	Telmex Servicios Empresariales S.A., CL
24	199553	5243.7	0.42%	6	31462	UNGLEICH-PLACE5, CH
25	151810	4827.5	0.26%	4	19310	PHYLAXISINC-AS-AP Phylaxis Korea, KR
26	24163	4729.7	0.19%	3	14189	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
27	20915	4564.0	0.06%	1	4564	HUNDRED-PERCENT-IT, GB
28	9287	4470.6	0.30%	8	22353	TIDCC-AS-AP True Internet Data Center Company Limited, TH
29	28126	4367.7	1.47%	26	109193	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
30	9671	4363.0	0.12%	2	8726	TRADEVAN-AS-AP Trade-Van Informaiton Services Co., TW
31	134094	4355.7	0.35%	6	26134	SERVERFIELD-AS Serverfield Co., Ltd., TW
32	10103	4339.3	0.70%	12	52072	HKBN-AS-AP HK Broadband Network Ltd., HK
33	21351	4178.0	0.62%	17	45958	CANALPLUSTELECOM, GP
34	138535	4074.7	0.16%	3	12224	FURDEVS-AS-AP Wu Qi, CN
35	199678	4041.0	0.05%	1	4041	AS-6RW-, RU
36	198090	3923.0	0.05%	1	3923	ASLIBRA, IT
37	274743	3609.9	0.34%	7	25269	FASTWEB TELECOMUNICACOES, BR
38	399916	3501.0	0.05%	1	3501	PACKETSTREAM-NAM, US
39	205157	3473.6	0.23%	5	17368	CIDNOC, US
40	396509	3414.8	0.46%	12	34148	LETSCLOUD, US
41	21570	3412.0	0.05%	5	3412	ACI-1, CA
42	211645	3390.0	0.05%	1	3390	SPG, DE
43	210796	3149.0	0.08%	2	6298	BJOERN-SCHLEYER Bjoern Schleyer, DE
44	24474	3147.0	0.08%	2	6294	ASNPANYCAST Nepal Internet Exchange NP Anycast, NP
45	30362	3010.0	0.04%	1	3010	HPT-ASN, US
46	53147	2869.0	0.08%	2	5738	FONTES SOLUCOES TECNOLOGICAS LTDA, BR
47	199235	2770.0	0.04%	1	2770	MIKROHALO-HU-AS, HU
48	40138	2752.0	1.15%	37	85312	MDNET, US
49	262901	2691.0	0.07%	2	5382	Vcnet Provedora de Internet Ltda., BR
50	26445	2622.0	0.04%
Total		714092.8	59.72%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	2a0f:7c40::/29	399462	5.20%	34600 -- AS6GNET, PL
2	2a02:1391:5100::/40	45941	0.60%	21351 -- CANALPLUSTELECOM, GP
3	2806:202::/32	41157	0.54%	28458 -- IENTC S DE RL DE CV, MX
4	2a0d:2904::/44	26804	0.35%	205651 -- CATOFES, CN
5	2804:248:100::/40	26272	0.34%	28598 -- DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
6	2a0c:b641:302::/47	18495	0.24%	204210 -- ZEUSPACKAGINGLTD, IE
7	240d:c010:165::/48	17848	0.23%	139341 -- ACE-AS-AP ACE, SG
8	2a0e:aa07:e044::/48	17843	0.23%	203664 -- LANXING-AS, CN
9	2a0a:e5c0:76::/48	16609	0.22%	209898 -- UNGLEICH-UNGLEICH-UPSTREAM, CH
10	2001:67c:20fc::/48	14722	0.19%	210564 -- SWANTZTER-AS, SE
11	2406:840:e620::/48	12181	0.16%	138535 -- FURDEVS-AS-AP Wu Qi, CN
12	2401:2260::/32	11376	0.15%	151650 -- SWITCHFIBER-AS-AP Switch Fiber, PH
13	2a14:3f87:9800::/38	10696	0.14%	64289 -- MACARNE, US
14	2607:74c0:140::/44	10488	0.14%	10103 -- HKBN-AS-AP HK Broadband Network Ltd., HK
15	2607:74c0:120::/44	10481	0.14%	10103 -- HKBN-AS-AP HK Broadband Network Ltd., HK
16	2607:74c0:100::/44	10451	0.14%	10103 -- HKBN-AS-AP HK Broadband Network Ltd., HK
17	2607:74c0:110::/44	10347	0.13%	10103 -- HKBN-AS-AP HK Broadband Network Ltd., HK
18	2607:74c0:130::/44	10291	0.13%	10103 -- HKBN-AS-AP HK Broadband Network Ltd., HK
19	2605:de00:bb::/48	10152	0.13%	30083 -- AS-30083-US-VELIA-NET, DE
20	2001:4541:9000::/36	9652	0.13%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
21	2a0a:e5c1:517::/48	9384	0.12%	199553 -- UNGLEICH-PLACE5, CH
22	2a0a:5480:1::/48	9364	0.12%	211894 -- UNGLEICH-PLACE18, CH
23	2a0a:5480:4::/48	9363	0.12%	211894 -- UNGLEICH-PLACE18, CH
24	2a0a:5480::/48	9363	0.12%	211894 -- UNGLEICH-PLACE18, CH
25	2a0a:5480:3::/48	9348	0.12%	211894 -- UNGLEICH-PLACE18, CH
26	2a0a:e5c0:16::/48	9342	0.12%	199553 -- UNGLEICH-PLACE5, CH
27	2a0a:e5c0:45::/48	9341	0.12%	199553 -- UNGLEICH-PLACE5, CH
28	2a0a:5480:5::/48	9340	0.12%	211894 -- UNGLEICH-PLACE18, CH
29	2a0a:5480:1ac::/48	9338	0.12%	211894 -- UNGLEICH-PLACE18, CH
30	2a0a:5480:2::/48	9334	0.12%	211894 -- UNGLEICH-PLACE18, CH
31	2a0e:b107:19cb::/48	8891	0.12%	214450 -- OGL-AS, DE
32	2c0f:e8a8::/32	8857	0.12%	328631 -- BallitoISP, ZA
33	2403:82c0::/32	8815	0.11%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
34	2804:20fc:2000::/36	8806	0.11%	264525 -- Coelho Tecnologia, BR
35	2001:678:658::/48	8803	0.11%	214450 -- OGL-AS, DE
36	2401:f540:7::/48	8712	0.11%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
37	2401:f540:2::/48	8711	0.11%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
38	2401:f540:1::/48	8706	0.11%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
39	2a0d:2a00:1::/48	8682	0.11%	205157 -- CIDNOC, US
40	2a0d:2a00:2::/48	8680	0.11%	205157 -- CIDNOC, US
41	2405:4500:d::/48	8071	0.11%	9671 -- TRADEVAN-AS-AP Trade-Van Informaiton Services Co., TW
42	2403:9f00::/32	7826	0.10%	17420 -- ACEREDC-TW Acer e-Enabling Data Center, Inc., TW
43	2405:3300::/32	7817	0.10%	131143 -- CHINATRUST-AS-TW Chinatrust Commercial Bank, TW
44	2600:6c7f:9370::/44	7793	0.10%	19115 -- CHARTER-19115-DC, US
45	2407:4900:1000::/36	7692	0.10%	18429 -- EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
46	2402:7500:faff::/48	7668	0.10%	24158 -- TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
47	2404:2280:10a::/48	7635	0.10%	24429 -- TAOBAO Zhejiang Taobao Network Co.,Ltd, CN
48	2407:4b00:4000::/36	7495	0.10%	24163 -- UBBNET-AS-TW UNION BROADBAND NETWORK, TW
49	2001:c50::/32	7488	0.10%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
50	2407:4b00:1000::/36	7356	0.10%	24164 -- UBBNET-AS-TW UNION BROADBAND NETWORK, TW
Total		989289	12.86%

14 Day BGP Update Statistics Profile: 16-December-2025 00:00 - 30-December-2025 23:59 (UTC+1000)

Number of BGP Update Messages:	24123620
Number of Prefix Changes:	27130027
Number of Prefix Updates:	24123620
Number of Prefix Withdrawals:	3006407
Average Prefixes per BGP Update:	1.12
Average BGP Update Messages per second:	19.94
Average Prefix Updates per second:	22.43
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:	7416555	(0.31 of recv'd updates)
Number of RIB Prefix Withdrawals:	258624	(0.09 of recv'd withdrawals)
Peak RIB Update Rate per second:	14631	(22:39:19 Sun, 21-Dec-2025)
Peak RIB Withdrawal Rate per second:	745	(18:03:24 Thu, 18-Dec-2025)
Seen Prefix Count:	248640
Updated Prefix Count:	164969
Stable Prefix Count:	83671
Seen Origin AS Count:	35984
Updated Origin AS Count:	29079
Stable Origin AS Count:	6905
Seen Unique Path Count:	158633
Updated Path Count:	136407
Stable Path Count:	22226

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