The BGP IPv6 Instability Report

This report is updated daily. The current report
was generated on 30 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	2795649	41.08%	504	5546.92	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
2	7552	459305	6.75%	3977	115.49	VIETEL-AS-AP Viettel Group, VN
3	202256	206502	3.03%	770	268.18	LAWLIETNET, CN
4	38841	184015	2.70%	38	4842.50	KBRO-AS-TW kbro CO. Ltd., TW
5	199340	114423	1.68%	3176	36.03	HONG-GUANWAN, HK
6	28126	110428	1.62%	26	4247.23	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
7	16509	97348	1.43%	5347	18.21	AMAZON-02, US
8	207432	93016	1.37%	546	170.36	CORESTREAM, US
9	40138	84914	1.25%	37	2294.97	MDNET, US
10	28649	75051	1.10%	77	974.69	Desktop Sigmanet Comunicacao Multimidia SA, BR
11	211894	68461	1.01%	8	8557.62	UNGLEICH-PLACE18, CH
12	24164	65001	0.96%	12	5416.75	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
13	8386	55226	0.81%	20	2761.30	KOCNET, TR
14	21351	45440	0.67%	17	2672.94	CANALPLUSTELECOM, GP
15	28458	40144	0.59%	2	20072.00	IENTC S DE RL DE CV, MX
16	9674	36891	0.54%	38	970.82	FET-TW Far EastTone Telecommunication Co., Ltd., TW
17	9924	36721	0.54%	11	3338.27	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
18	204508	36142	0.53%	18	2007.89	MLGT, IT
19	28598	32694	0.48%	14	2335.29	DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
20	199553	30694	0.45%	6	5115.67	UNGLEICH-PLACE5, CH
21	205651	26883	0.39%	1	26883.00	CATOFES, CN
22	9287	23246	0.34%	8	2905.75	TIDCC-AS-AP True Internet Data Center Company Limited, TH
23	134094	23147	0.34%	6	3857.83	SERVERFIELD-AS Serverfield Co., Ltd., TW
24	262448	22157	0.33%	20	1107.85	DIALHOST INTERNET EIRELI, BR
25	139341	21746	0.32%	176	123.56	ACE-AS-AP ACE, SG
26	38266	21635	0.32%	1387	15.60	VIL-AS-AP Vodafone Idea Ltd, IN
27	12041	20999	0.31%	228	92.10	AS-AFILIAS1, US
28	10103	20417	0.30%	12	1701.42	HKBN-AS-AP HK Broadband Network Ltd., HK
29	204210	19061	0.28%	4	4765.25	ZEUSPACKAGINGLTD, IE
30	18429	18739	0.28%	3	6246.33	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
31	264525	18644	0.27%	5	3728.80	Coelho Tecnologia, BR
32	24165	18495	0.27%	3	6165.00	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
33	396509	18186	0.27%	8	2273.25	LETSCLOUD, US
34	214450	18022	0.26%	2	9011.00	OGL-AS, DE
35	45271	17773	0.26%	1250	14.22	VIL-AS-AP Vodafone Idea Ltd, IN
36	203664	17753	0.26%	1	17753.00	LANXING-AS, CN
37	205157	17487	0.26%	5	3497.40	CIDNOC, US
38	209898	16498	0.24%	2	8249.00	UNGLEICH-UNGLEICH-UPSTREAM, CH
39	213092	16436	0.24%	11	1494.18	MARBLEIS, GB
40	210564	14665	0.22%	1	14665.00	SWANTZTER-AS, SE
41	13335	14556	0.21%	2988	4.87	CLOUDFLARENET, US
42	24173	14261	0.21%	262	54.43	NETNAM-AS-AP Netnam Company, VN
43	21664	14097	0.21%	39	361.46	AMZN-BYOASN, US
44	151810	14031	0.21%	4	3507.75	PHYLAXISINC-AS-AP Phylaxis Korea, KR
45	17072	12968	0.19%	1413	9.18	TOTAL PLAY TELECOMUNICACIONES SA DE CV, MX
46	39891	12654	0.19%	2058	6.15	ALJAWWALSTC-AS, SA
47	24163	12602	0.19%	3	4200.67	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
48	48635	12166	0.18%	21	579.33	CLDIN-NL Your Hosting B.V. part of Your.Online, NL
49	149500	12127	0.18%	4	3031.75	SR-AS-AP Shane Renshaw, HK
50	30058	11906	0.17%	143	83.26	FDCSERVERS, US
Total		5191422	76.29%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	205651	26883.0	0.39%	1	26883	CATOFES, CN
2	28458	20072.0	0.59%	2	40144	IENTC S DE RL DE CV, MX
3	203664	17753.0	0.26%	1	17753	LANXING-AS, CN
4	210564	14665.0	0.22%	1	14665	SWANTZTER-AS, SE
5	151650	10506.0	0.15%	1	10506	SWITCHFIBER-AS-AP Switch Fiber, PH
6	30083	9858.0	0.14%	3	9858	AS-30083-US-VELIA-NET, DE
7	52191	9392.0	0.14%	1	9392	LOCALKA-NET-AS , UA
8	214450	9011.0	0.26%	2	18022	OGL-AS, DE
9	328631	8750.0	0.13%	1	8750	BallitoISP, ZA
10	211894	8557.6	1.01%	8	68461	UNGLEICH-PLACE18, CH
11	209898	8249.0	0.24%	2	16498	UNGLEICH-UNGLEICH-UPSTREAM, CH
12	400006	7123.0	0.10%	1	7123	DIGITAL-MONKS-01, US
13	131143	7036.0	0.10%	1	7036	CHINATRUST-AS-TW Chinatrust Commercial Bank, TW
14	17420	7017.0	0.10%	1	7017	ACEREDC-TW Acer e-Enabling Data Center, Inc., TW
15	271944	6992.0	0.10%	1	6992	AUDIBEL TELECOMUNICACIONES S.A., AR
16	204210	6353.7	0.28%	4	19061	ZEUSPACKAGINGLTD, IE
17	18429	6246.3	0.28%	3	18739	EXTRALAN-TW Extra-Lan Technologies Co., LTD, TW
18	24165	6165.0	0.27%	3	18495	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
19	24164	5909.2	0.96%	12	65001	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
20	199678	5587.0	0.08%	1	5587	AS-6RW-, RU
21	24158	5546.9	41.08%	504	2795649	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
22	6535	5498.5	0.16%	8	10997	Telmex Servicios Empresariales S.A., CL
23	9924	5245.9	0.54%	11	36721	TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
24	199553	5115.7	0.45%	6	30694	UNGLEICH-PLACE5, CH
25	38841	4973.4	2.70%	38	184015	KBRO-AS-TW kbro CO. Ltd., TW
26	9287	4649.2	0.34%	8	23246	TIDCC-AS-AP True Internet Data Center Company Limited, TH
27	20915	4616.0	0.07%	1	4616	HUNDRED-PERCENT-IT, GB
28	28126	4417.1	1.62%	26	110428	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
29	24163	4200.7	0.19%	3	12602	UBBNET-AS-TW UNION BROADBAND NETWORK, TW
30	21351	4130.9	0.67%	17	45440	CANALPLUSTELECOM, GP
31	138535	3954.7	0.17%	3	11864	FURDEVS-AS-AP Wu Qi, CN
32	198090	3917.0	0.06%	1	3917	ASLIBRA, IT
33	9671	3877.0	0.11%	2	7754	TRADEVAN-AS-AP Trade-Van Informaiton Services Co., TW
34	134094	3857.8	0.34%	6	23147	SERVERFIELD-AS Serverfield Co., Ltd., TW
35	264525	3728.8	0.27%	5	18644	Coelho Tecnologia, BR
36	151810	3507.8	0.21%	4	14031	PHYLAXISINC-AS-AP Phylaxis Korea, KR
37	205157	3497.4	0.26%	5	17487	CIDNOC, US
38	24474	3429.5	0.10%	2	6859	ASNPANYCAST Nepal Internet Exchange NP Anycast, NP
39	211645	3415.0	0.05%	1	3415	SPG, DE
40	21570	3272.0	0.05%	5	3272	ACI-1, CA
41	210796	3228.5	0.09%	2	6457	BJOERN-SCHLEYER Bjoern Schleyer, DE
42	30362	3167.0	0.05%	1	3167	HPT-ASN, US
43	149500	3031.8	0.18%	4	12127	SR-AS-AP Shane Renshaw, HK
44	396509	3031.0	0.27%	8	18186	LETSCLOUD, US
45	28598	2972.2	0.48%	14	32694	DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
46	8386	2906.6	0.81%	20	55226	KOCNET, TR
47	53147	2882.0	0.08%	2	5764	FONTES SOLUCOES TECNOLOGICAS LTDA, BR
48	199235	2775.0	0.04%	1	2775	MIKROHALO-HU-AS, HU
49	40138	2739.2	1.25%	37	84914	MDNET, US
50	262901	2729.5	0.08%
Total		316439.9	58.57%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	2a02:1391:5100::/40	45423	0.64%	21351 -- CANALPLUSTELECOM, GP
2	2806:202::/32	40087	0.57%	28458 -- IENTC S DE RL DE CV, MX
3	2804:248:100::/40	32629	0.46%	28598 -- DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
4	2a0d:2904::/44	26883	0.38%	205651 -- CATOFES, CN
5	2a0c:b641:302::/47	19043	0.27%	204210 -- ZEUSPACKAGINGLTD, IE
6	2804:20fc:2000::/36	18622	0.26%	264525 -- Coelho Tecnologia, BR
7	240d:c010:165::/48	18056	0.26%	139341 -- ACE-AS-AP ACE, SG
8	2a0e:aa07:e044::/48	17754	0.25%	203664 -- LANXING-AS, CN
9	2a0a:e5c0:76::/48	16497	0.23%	209898 -- UNGLEICH-UNGLEICH-UPSTREAM, CH
10	2001:67c:20fc::/48	14666	0.21%	210564 -- SWANTZTER-AS, SE
11	2406:840:e620::/48	11823	0.17%	138535 -- FURDEVS-AS-AP Wu Qi, CN
12	2a14:3f87:9800::/38	10760	0.15%	64289 -- MACARNE, US
13	2401:2260::/32	10506	0.15%	151650 -- SWITCHFIBER-AS-AP Switch Fiber, PH
14	2605:de00:bb::/48	9858	0.14%	30083 -- AS-30083-US-VELIA-NET, DE
15	2001:67c:21f0::/48	9392	0.13%	52191 -- LOCALKA-NET-AS , UA
16	2a0a:e5c1:517::/48	9360	0.13%	199553 -- UNGLEICH-PLACE5, CH
17	2a0a:5480:1::/48	9341	0.13%	211894 -- UNGLEICH-PLACE18, CH
18	2a0a:5480::/48	9341	0.13%	211894 -- UNGLEICH-PLACE18, CH
19	2a0a:5480:4::/48	9340	0.13%	211894 -- UNGLEICH-PLACE18, CH
20	2a0a:5480:3::/48	9324	0.13%	211894 -- UNGLEICH-PLACE18, CH
21	2a0a:e5c0:16::/48	9312	0.13%	199553 -- UNGLEICH-PLACE5, CH
22	2a0a:e5c0:45::/48	9311	0.13%	199553 -- UNGLEICH-PLACE5, CH
23	2a0a:5480:5::/48	9305	0.13%	211894 -- UNGLEICH-PLACE18, CH
24	2a0a:5480:1ac::/48	9303	0.13%	211894 -- UNGLEICH-PLACE18, CH
25	2a0a:5480:2::/48	9301	0.13%	211894 -- UNGLEICH-PLACE18, CH
26	2a0e:b107:19cb::/48	9018	0.13%	214450 -- OGL-AS, DE
27	2001:678:658::/48	9004	0.13%	214450 -- OGL-AS, DE
28	2c0f:e8a8::/32	8750	0.12%	328631 -- BallitoISP, ZA
29	2a0d:2a00:1::/48	8743	0.12%	205157 -- CIDNOC, US
30	2a0d:2a00:2::/48	8741	0.12%	205157 -- CIDNOC, US
31	2001:4541:9000::/36	8510	0.12%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
32	2403:82c0::/32	7794	0.11%	9924 -- TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
33	2a13:aac4:1000::/36	7742	0.11%	204508 -- MLGT, IT
34	2401:f540:2::/48	7716	0.11%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
35	2401:f540:7::/48	7715	0.11%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
36	2401:f540:1::/48	7711	0.11%	134094 -- SERVERFIELD-AS Serverfield Co., Ltd., TW
37	2a05:4140:316::/48	7470	0.11%	204508 -- MLGT, IT
38	2605:9cc0:c06::/48	7220	0.10%	16509 -- AMAZON-02, US 21664 -- AMZN-BYOASN, US
39	2600:6c7f:9370::/44	7202	0.10%	19115 -- CHARTER-19115-DC, US
40	2a02:16c8::/35	7183	0.10%	6871 -- PLUSNET UK Internet Service Provider, GB
41	2405:4500:d::/48	7167	0.10%	9671 -- TRADEVAN-AS-AP Trade-Van Informaiton Services Co., TW
42	2606:7040::/32	7123	0.10%	400006 -- DIGITAL-MONKS-01, US
43	2400:58a0:1003::/48	7070	0.10%	149500 -- SR-AS-AP Shane Renshaw, HK
44	2a05:4140:304::/48	7062	0.10%	204508 -- MLGT, IT
45	2405:3300::/32	7036	0.10%	131143 -- CHINATRUST-AS-TW Chinatrust Commercial Bank, TW
46	2403:9f00::/32	7017	0.10%	17420 -- ACEREDC-TW Acer e-Enabling Data Center, Inc., TW
47	2803:6610::/32	6992	0.10%	271944 -- AUDIBEL TELECOMUNICACIONES S.A., AR
48	2a05:4140:380::/42	6960	0.10%	204508 -- MLGT, IT
49	2404:2280:10a::/48	6874	0.10%	24429 -- TAOBAO Zhejiang Taobao Network Co.,Ltd, CN
50	2a05:4140:333::/48	6865	0.10%	204508 -- MLGT, IT
Total		585922	8.27%

14 Day BGP Update Statistics Profile: 15-December-2025 00:00 - 29-December-2025 23:59 (UTC+1000)

Number of BGP Update Messages:	24207962
Number of Prefix Changes:	27242082
Number of Prefix Updates:	24207962
Number of Prefix Withdrawals:	3034120
Average Prefixes per BGP Update:	1.13
Average BGP Update Messages per second:	20.01
Average Prefix Updates per second:	22.52
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:	6805886	(0.28 of recv'd updates)
Number of RIB Prefix Withdrawals:	256051	(0.08 of recv'd withdrawals)
Peak RIB Update Rate per second:	14006	(22:39:19 Sun, 21-Dec-2025)
Peak RIB Withdrawal Rate per second:	578	(18:03:24 Thu, 18-Dec-2025)
Seen Prefix Count:	248323
Updated Prefix Count:	173378
Stable Prefix Count:	74945
Seen Origin AS Count:	35972
Updated Origin AS Count:	29586
Stable Origin AS Count:	6386
Seen Unique Path Count:	160380
Updated Path Count:	137973
Stable Path Count:	22407

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