The BGP IPv6 Instability Report

This report is updated daily. The current report
was generated on 4 January 2026 01:16 (UTC+1000)

50 Most active ASes for the past 14 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	24158	1959870	29.61%	504	3888.63	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
2	34600	1183398	17.88%	1	1183398.00	AS6GNET, PL
3	202256	209488	3.17%	770	272.06	LAWLIETNET, CN
4	38841	160671	2.43%	38	4228.18	KBRO-AS-TW kbro CO. Ltd., TW
5	199340	125770	1.90%	3816	32.96	HONG-GUANWAN, HK
6	28126	105900	1.60%	26	4073.08	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
7	39891	103181	1.56%	2058	50.14	ALJAWWALSTC-AS, SA
8	16509	84356	1.27%	5325	15.84	AMAZON-02, US
9	40138	84166	1.27%	37	2274.76	MDNET, US
10	28649	71063	1.07%	77	922.90	Desktop Sigmanet Comunicacao Multimidia SA, BR
11	211894	67488	1.02%	8	8436.00	UNGLEICH-PLACE18, CH
12	24164	66600	1.01%	12	5550.00	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
13	21351	45990	0.69%	17	2705.29	CANALPLUSTELECOM, GP
14	9924	38514	0.58%	11	3501.27	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
15	396509	34625	0.52%	12	2885.42	LETSCLOUD, US
16	199553	34152	0.52%	6	5692.00	UNGLEICH-PLACE5, CH
17	28458	32539	0.49%	2	16269.50	IENTC S DE RL DE CV, MX
18	39900	28902	0.44%	3	9634.00	GOODTEC, LV
19	8386	28091	0.42%	20	1404.55	KOCNET, TR
20	9674	27131	0.41%	38	713.97	FET-TW Far EastTone Telecommunication Co., Ltd., TW
21	205651	26717	0.40%	1	26717.00	CATOFES, CN
22	7552	26323	0.40%	3977	6.62	VIETEL-AS-AP Viettel Group, VN
23	28598	26224	0.40%	14	1873.14	DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
24	38266	24985	0.38%	1378	18.13	VIL-AS-AP Vodafone Idea Ltd, IN
25	274743	24943	0.38%	7	3563.29	FASTWEB TELECOMUNICACOES, BR
26	134094	24558	0.37%	6	4093.00	SERVERFIELD-AS Serverfield Co., Ltd., TW
27	149500	24157	0.37%	4	6039.25	SR-AS-AP Shane Renshaw, HK
28	203664	21600	0.33%	1	21600.00	LANXING-AS, CN
29	139341	21381	0.32%	179	119.45	ACE-AS-AP ACE, SG
30	262448	21322	0.32%	11	1938.36	DIALHOST INTERNET EIRELI, BR
31	48635	20682	0.31%	21	984.86	CLDIN-NL Your Hosting B.V. part of Your.Online, NL
32	213092	20456	0.31%	13	1573.54	MARBLEIS, GB
33	10103	20324	0.31%	12	1693.67	HKBN-AS-AP HK Broadband Network Ltd., HK
34	204508	19956	0.30%	18	1108.67	MLGT, IT
35	30058	19949	0.30%	143	139.50	FDCSERVERS, US
36	18429	19382	0.29%	3	6460.67	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
37	204210	19329	0.29%	4	4832.25	ZEUSPACKAGINGLTD, IE
38	12252	19118	0.29%	456	41.93	America Movil Peru S.A.C., PE
39	24165	18995	0.29%	3	6331.67	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
40	214450	18089	0.27%	2	9044.50	OGL-AS, DE
41	205157	16867	0.25%	5	3373.40	CIDNOC, US
42	45271	16755	0.25%	1250	13.40	VIL-AS-AP Vodafone Idea Ltd, IN
43	61573	16422	0.25%	13	1263.23	Ip Telecom, BR
44	209898	16370	0.25%	2	8185.00	UNGLEICH-UNGLEICH-UPSTREAM, CH
45	24163	15546	0.23%	3	5182.00	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
46	9287	14658	0.22%	8	1832.25	TIDCC-AS-AP True Internet Data Center Company Limited, TH
47	210564	14586	0.22%	1	14586.00	SWANTZTER-AS, SE
48	2018	14453	0.22%	14	1032.36	TENET-1, ZA
49	151810	14267	0.22%	4	3566.75	PHYLAXISINC-AS-AP Phylaxis Korea, KR
50	39686	14168	0.21%	14	1012.00	AS-EUROFIBER, NL
Total		5084477	76.81%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	34600	1183398.0	17.88%	1	1183398	AS6GNET, PL
2	205651	26717.0	0.40%	1	26717	CATOFES, CN
3	203664	21600.0	0.33%	1	21600	LANXING-AS, CN
4	204210	19329.0	0.29%	4	19329	ZEUSPACKAGINGLTD, IE
5	28458	16269.5	0.49%	2	32539	IENTC S DE RL DE CV, MX
6	210564	14586.0	0.22%	1	14586	SWANTZTER-AS, SE
7	151650	13199.0	0.20%	1	13199	SWITCHFIBER-AS-AP Switch Fiber, PH
8	28598	13112.0	0.40%	14	26224	DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
9	21351	11497.5	0.69%	17	45990	CANALPLUSTELECOM, GP
10	30083	9953.0	0.15%	3	9953	AS-30083-US-VELIA-NET, DE
11	328631	9646.0	0.15%	1	9646	BallitoISP, ZA
12	39900	9634.0	0.44%	3	28902	GOODTEC, LV
13	214450	9044.5	0.27%	2	18089	OGL-AS, DE
14	211894	8436.0	1.02%	8	67488	UNGLEICH-PLACE18, CH
15	209898	8185.0	0.25%	2	16370	UNGLEICH-UNGLEICH-UPSTREAM, CH
16	131143	7240.0	0.11%	1	7240	CHINATRUST-AS-TW Chinatrust Commercial Bank, TW
17	17420	7176.0	0.11%	1	7176	ACEREDC-TW Acer e-Enabling Data Center, Inc., TW
18	264525	6961.0	0.21%	5	13922	Coelho Tecnologia, BR
19	271944	6684.0	0.10%	1	6684	AUDIBEL TELECOMUNICACIONES S.A., AR
20	18429	6460.7	0.29%	3	19382	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
21	24165	6331.7	0.29%	3	18995	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
22	24164	6054.5	1.01%	12	66600	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
23	149500	6039.2	0.37%	4	24157	SR-AS-AP Shane Renshaw, HK
24	199553	5692.0	0.52%	6	34152	UNGLEICH-PLACE5, CH
25	199678	5623.0	0.08%	1	5623	AS-6RW-, RU
26	208948	5523.0	0.08%	3	5523	RECYCLED-CLOUD-AS, CH
27	9924	5502.0	0.58%	11	38514	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
28	147039	5209.0	0.08%	1	5209	CYPREA-AS-AP Cyprea Private Limited, MV
29	24163	5182.0	0.23%	3	15546	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
30	6535	5127.5	0.15%	8	10255	Telmex Servicios Empresariales S.A., CL
31	38841	4590.6	2.43%	38	160671	KBRO-AS-TW kbro CO. Ltd., TW
32	20915	4542.0	0.07%	1	4542	HUNDRED-PERCENT-IT, GB
33	138535	4374.7	0.20%	3	13124	FURDEVS-AS-AP Wu Qi, CN
34	28126	4236.0	1.60%	26	105900	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
35	134094	4093.0	0.37%	6	24558	SERVERFIELD-AS Serverfield Co., Ltd., TW
36	198090	3932.0	0.06%	1	3932	ASLIBRA, IT
37	268487	3916.0	0.06%	5	3916	PRISMA TELECOMUNICACOES LTDA. EPP, BR
38	24158	3888.6	29.61%	504	1959870	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
39	396509	3847.2	0.52%	12	34625	LETSCLOUD, US
40	9671	3800.5	0.11%	2	7601	TRADEVAN-AS-AP Trade-Van Informaiton Services Co., TW
41	52191	3757.0	0.06%	1	3757	LOCALKA-NET-AS , UA
42	21570	3687.0	0.06%	5	3687	ACI-1, CA
43	151810	3566.8	0.22%	4	14267	PHYLAXISINC-AS-AP Phylaxis Korea, KR
44	274743	3563.3	0.38%	7	24943	FASTWEB TELECOMUNICACOES, BR
45	211645	3451.0	0.05%	1	3451	SPG, DE
46	210796	3437.5	0.10%	2	6875	BJOERN-SCHLEYER Bjoern Schleyer, DE
47	205157	3373.4	0.25%	5	16867	CIDNOC, US
48	64289	3220.5	0.19%	12	12882	MACARNE, US
49	53147	2842.0	0.09%	2	5684	FONTES SOLUCOES TECNOLOGICAS LTDA, BR
50	199235	2811.0	0.04%
Total		1540342.2	63.86%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	2a0f:7c40::/29	1183398	17.23%	34600 -- AS6GNET, PL
2	2a02:1391:5100::/40	45974	0.67%	21351 -- CANALPLUSTELECOM, GP
3	2806:202::/32	32488	0.47%	28458 -- IENTC S DE RL DE CV, MX
4	2a0d:2904::/44	26717	0.39%	205651 -- CATOFES, CN
5	2804:248:100::/40	26201	0.38%	28598 -- DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
6	2a0e:aa07:e044::/48	21600	0.31%	203664 -- LANXING-AS, CN
7	2a0c:b641:302::/47	19329	0.28%	204210 -- ZEUSPACKAGINGLTD, IE
8	240d:c010:165::/48	17867	0.26%	139341 -- ACE-AS-AP ACE, SG
9	2a0a:e5c0:76::/48	16368	0.24%	209898 -- UNGLEICH-UNGLEICH-UPSTREAM, CH
10	2001:67c:20fc::/48	14587	0.21%	210564 -- SWANTZTER-AS, SE
11	2804:20fc:2000::/36	13921	0.20%	264525 -- Coelho Tecnologia, BR
12	2401:2260::/32	13199	0.19%	151650 -- SWITCHFIBER-AS-AP Switch Fiber, PH
13	2406:840:e620::/48	13072	0.19%	138535 -- FURDEVS-AS-AP Wu Qi, CN
14	2a14:3f87:9800::/38	12871	0.19%	64289 -- MACARNE, US
15	2605:de00:bb::/48	9953	0.14%	30083 -- AS-30083-US-VELIA-NET, DE
16	2c0f:e8a8::/32	9646	0.14%	328631 -- BallitoISP, ZA
17	2a0b:88c0:48::/48	9638	0.14%	39900 -- GOODTEC, LV
18	2a12:b2c0:6::/48	9633	0.14%	39900 -- GOODTEC, LV
19	2a13:6c40::/29	9631	0.14%	39900 -- GOODTEC, LV
20	2a0a:e5c1:517::/48	9486	0.14%	199553 -- UNGLEICH-PLACE5, CH
21	2a0a:e5c0:45::/48	9452	0.14%	199553 -- UNGLEICH-PLACE5, CH
22	2a0a:e5c0:16::/48	9451	0.14%	199553 -- UNGLEICH-PLACE5, CH
23	2a0a:5480:4::/48	9386	0.14%	211894 -- UNGLEICH-PLACE18, CH
24	2a0a:5480:1::/48	9386	0.14%	211894 -- UNGLEICH-PLACE18, CH
25	2a0a:5480::/48	9383	0.14%	211894 -- UNGLEICH-PLACE18, CH
26	2a0a:5480:5::/48	9369	0.14%	211894 -- UNGLEICH-PLACE18, CH
27	2a0a:5480:3::/48	9366	0.14%	211894 -- UNGLEICH-PLACE18, CH
28	2a0a:5480:1ac::/48	9365	0.14%	211894 -- UNGLEICH-PLACE18, CH
29	2a0a:5480:2::/48	9355	0.14%	211894 -- UNGLEICH-PLACE18, CH
30	2a0e:b107:19cb::/48	9072	0.13%	214450 -- OGL-AS, DE
31	2001:4541:9000::/36	9035	0.13%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
32	2001:678:658::/48	9019	0.13%	214450 -- OGL-AS, DE
33	2a0d:2a00:2::/48	8431	0.12%	205157 -- CIDNOC, US
34	2a0d:2a00:1::/48	8430	0.12%	205157 -- CIDNOC, US
35	2403:82c0::/32	8306	0.12%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
36	2401:f540:7::/48	8185	0.12%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
37	2401:f540:2::/48	8184	0.12%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
38	2401:f540:1::/48	8179	0.12%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
39	2600:6c7f:9370::/44	8022	0.12%	19115 -- CHARTER-19115-DC, US
40	2a03:90c0:7a0::/44	7797	0.11%	59437 -- NORTHERNDATA, DE
41	2a13:aac4:1000::/36	7750	0.11%	204508 -- MLGT, IT
42	2405:4500:d::/48	7522	0.11%	9671 -- TRADEVAN-AS-AP Trade-Van Informaiton Services Co., TW
43	2402:7500:faff::/48	7354	0.11%	24158 -- TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
44	2405:3300::/32	7240	0.11%	131143 -- CHINATRUST-AS-TW Chinatrust Commercial Bank, TW
45	2a02:16c8::/35	7204	0.10%	6871 -- PLUSNET UK Internet Service Provider, GB
46	2403:9f00::/32	7176	0.10%	17420 -- ACEREDC-TW Acer e-Enabling Data Center, Inc., TW
47	2407:4900:1000::/36	7125	0.10%	18429 -- EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
48	2400:58a0:1003::/48	7112	0.10%	149500 -- SR-AS-AP Shane Renshaw, HK
49	2404:2280:10a::/48	7060	0.10%	24429 -- TAOBAO Zhejiang Taobao Network Co.,Ltd, CN
50	2001:c50::/32	6995	0.10%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
Total		1765290	25.69%

14 Day BGP Update Statistics Profile: 20-December-2025 00:00 - 3-January-2026 23:59 (UTC+1000)

Number of BGP Update Messages:	21442603
Number of Prefix Changes:	24378696
Number of Prefix Updates:	21442603
Number of Prefix Withdrawals:	2936093
Average Prefixes per BGP Update:	1.14
Average BGP Update Messages per second:	17.73
Average Prefix Updates per second:	20.15
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:	6617985	(0.31 of recv'd updates)
Number of RIB Prefix Withdrawals:	249985	(0.09 of recv'd withdrawals)
Peak RIB Update Rate per second:	20648	(22:30:35 Sun, 21-Dec-2025)
Peak RIB Withdrawal Rate per second:	426	(03:23:39 Fri, 26-Dec-2025)
Seen Prefix Count:	248449
Updated Prefix Count:	139663
Stable Prefix Count:	108786
Seen Origin AS Count:	35945
Updated Origin AS Count:	28024
Stable Origin AS Count:	7921
Seen Unique Path Count:	150232
Updated Path Count:	128086
Stable Path Count:	22146

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