The BGP IPv6 Instability Report

This report is updated daily. The current report
was generated on 19 December 2025 01:16 (UTC+1000)

50 Most active ASes for the past 14 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	7552	550228	12.05%	3977	138.35	VIETEL-AS-AP Viettel Group, VN
2	24158	257393	5.64%	504	510.70	TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
3	202256	230880	5.05%	885	260.88	LAWLIETNET, CN
4	39891	106829	2.34%	2058	51.91	ALJAWWALSTC-AS, SA
5	16509	97671	2.14%	5469	17.86	AMAZON-02, US
6	199340	96491	2.11%	4147	23.27	HONG-GUANWAN, HK
7	34600	91504	2.00%	1	91504.00	AS6GNET, PL
8	8386	90642	1.98%	20	4532.10	KOCNET, TR
9	40138	84369	1.85%	38	2220.24	MDNET, US
10	22616	72679	1.59%	39	1863.56	ZSCALER-SJC1, US
11	211894	66645	1.46%	8	8330.62	UNGLEICH-PLACE18, CH
12	28126	57004	1.25%	23	2478.43	BRISANET SERVICOS DE TELECOMUNICACOES S.A, BR
13	204508	54683	1.20%	18	3037.94	MLGT, IT
14	216193	52707	1.15%	1	52707.00	AS-HYPERION-CLOUD HYPERION CLOUD SAS, FR
15	28649	46659	1.02%	77	605.96	Desktop Sigmanet Comunicacao Multimidia SA, BR
16	12041	43273	0.95%	228	189.79	AS-AFILIAS1, US
17	21351	40882	0.90%	17	2404.82	CANALPLUSTELECOM, GP
18	216141	40174	0.88%	1	40174.00	LEATYON-AS, IT
19	265634	27558	0.60%	29	950.28	JR INTERCOM S.R.L, AR
20	205651	27525	0.60%	1	27525.00	CATOFES, CN
21	199553	27217	0.60%	6	4536.17	UNGLEICH-PLACE5, CH
22	43350	26648	0.58%	24	1110.33	NFORCE, NL
23	214732	26348	0.58%	3	8782.67	RATATOSKR RATATOSKR, US
24	139341	23946	0.52%	175	136.83	ACE-AS-AP ACE, SG
25	42375	23768	0.52%	447	53.17	INET-AS, SC
26	17072	22481	0.49%	1413	15.91	TOTAL PLAY TELECOMUNICACIONES SA DE CV, MX
27	38266	22077	0.48%	1388	15.91	VIL-AS-AP Vodafone Idea Ltd, IN
28	213092	21030	0.46%	12	1752.50	MARBLEIS, GB
29	262448	20828	0.46%	20	1041.40	DIALHOST INTERNET EIRELI, BR
30	28598	19750	0.43%	14	1410.71	DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
31	268431	19636	0.43%	7	2805.14	netX TI LTDA, BR
32	10103	19469	0.43%	12	1622.42	HKBN-AS-AP HK Broadband Network Ltd., HK
33	28640	19076	0.42%	15	1271.73	VIPWay Telecomunicacoes Ltda, BR
34	204210	18713	0.41%	4	4678.25	ZEUSPACKAGINGLTD, IE
35	51202	18063	0.40%	12	1505.25	NUXOA, DE
36	5416	17666	0.39%	1042	16.95	Internet Service Provider, BH
37	48635	17637	0.39%	21	839.86	CLDIN-NL Your Hosting B.V. part of Your.Online, NL
38	24173	17327	0.38%	261	66.39	NETNAM-AS-AP Netnam Company, VN
39	203664	17233	0.38%	1	17233.00	LANXING-AS, CN
40	45271	16673	0.37%	1249	13.35	VIL-AS-AP Vodafone Idea Ltd, IN
41	272708	16545	0.36%	13	1272.69	MARTINS E SA LTDA, BR
42	209898	16402	0.36%	2	8201.00	UNGLEICH-UNGLEICH-UPSTREAM, CH
43	272053	15937	0.35%	1	15937.00	ANTUNES FLORES SERGIO OMAR NUEVA NET, AR
44	11172	15746	0.34%	2165	7.27	Alestra, S. de R.L. de C.V., MX
45	38841	15398	0.34%	38	405.21	KBRO-AS-TW kbro CO. Ltd., TW
46	30058	15390	0.34%	143	107.62	FDCSERVERS, US
47	214450	15387	0.34%	2	7693.50	OGL-AS, DE
48	12735	14876	0.33%	422	35.25	ASTURKNET, TR
49	21664	14577	0.32%	39	373.77	AMZN-BYOASN, US
50	36183	13799	0.30%	1644	8.39	AKAMAI-AS, US
Total		2705439	59.26%

50 Most active ASes for the past 14 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	34600	91504.0	2.00%	1	91504	AS6GNET, PL
2	216193	52707.0	1.15%	1	52707	AS-HYPERION-CLOUD HYPERION CLOUD SAS, FR
3	216141	40174.0	0.88%	1	40174	LEATYON-AS, IT
4	205651	27525.0	0.60%	1	27525	CATOFES, CN
5	203664	17233.0	0.38%	1	17233	LANXING-AS, CN
6	272053	15937.0	0.35%	1	15937	ANTUNES FLORES SERGIO OMAR NUEVA NET, AR
7	210564	13679.0	0.30%	1	13679	SWANTZTER-AS, SE
8	214732	13174.0	0.58%	3	26348	RATATOSKR RATATOSKR, US
9	44297	10914.0	0.24%	1	10914	ICODIA ICODIA NETWORK INTEGRITY, FR
10	30083	10346.0	0.23%	3	10346	AS-30083-US-VELIA-NET, DE
11	328631	9029.0	0.20%	1	9029	BallitoISP, ZA
12	211894	8330.6	1.46%	8	66645	UNGLEICH-PLACE18, CH
13	209898	8201.0	0.36%	2	16402	UNGLEICH-UNGLEICH-UPSTREAM, CH
14	214450	7693.5	0.34%	2	15387	OGL-AS, DE
15	210305	7472.0	0.16%	1	7472	FRR-TESTLAB, US
16	271944	6976.0	0.15%	1	6976	AUDIBEL TELECOMUNICACIONES S.A., AR
17	204210	6237.7	0.41%	4	18713	ZEUSPACKAGINGLTD, IE
18	203309	5759.0	0.13%	2	5759	CHOCO-AS, CN
19	22616	5590.7	1.59%	39	72679	ZSCALER-SJC1, US
20	6535	5578.0	0.24%	8	11156	Telmex Servicios Empresariales S.A., CL
21	52191	5132.0	0.11%	1	5132	LOCALKA-NET-AS , UA
22	141145	4888.0	0.11%	1	4888	GIGANET-AS-ID PT Giga Digital Nusantara, ID
23	268487	4833.0	0.11%	5	4833	PRISMA TELECOMUNICACOES LTDA. EPP, BR
24	20915	4673.0	0.10%	1	4673	HUNDRED-PERCENT-IT, GB
25	199553	4536.2	0.60%	6	27217	UNGLEICH-PLACE5, CH
26	8386	4532.1	1.98%	20	90642	KOCNET, TR
27	265314	4336.0	0.09%	1	4336	Toolsoft Tecnologia Ltda, BR
28	21570	4106.0	0.09%	5	4106	ACI-1, CA
29	21351	4088.2	0.90%	17	40882	CANALPLUSTELECOM, GP
30	30362	4036.0	0.09%	1	4036	HPT-ASN, US
31	198090	3891.0	0.09%	1	3891	ASLIBRA, IT
32	24474	3791.5	0.17%	2	7583	ASNPANYCAST Nepal Internet Exchange NP Anycast, NP
33	138535	3698.3	0.24%	3	11095	FURDEVS-AS-AP Wu Qi, CN
34	211645	3308.0	0.07%	1	3308	SPG, DE
35	151810	3276.8	0.29%	4	13107	PHYLAXISINC-AS-AP Phylaxis Korea, KR
36	210796	3233.5	0.14%	2	6467	BJOERN-SCHLEYER Bjoern Schleyer, DE
37	399916	3220.0	0.07%	1	3220	PACKETSTREAM-NAM, US
38	26445	3186.0	0.07%	1	3186	OWL, US
39	204508	3037.9	1.20%	18	54683	MLGT, IT
40	199678	2957.0	0.06%	1	2957	AS-6RW-, RU
41	212173	2868.0	0.06%	1	2868	XP, SA
42	58821	2837.5	0.25%	4	11350	IDNIC-LJN-AS-ID PT Lintas Jaringan Nusantara, ID
43	262901	2808.0	0.12%	2	5616	Vcnet Provedora de Internet Ltda., BR
44	268431	2805.1	0.43%	7	19636	netX TI LTDA, BR
45	199235	2784.0	0.06%	1	2784	MIKROHALO-HU-AS, HU
46	52382	2755.0	0.06%	1	2755	Faculte Des Sciences, Universite dEtat dHaiti, HT
47	214160	2680.0	0.06%	2	2680	SHREE, GB
48	60742	2617.0	0.06%	1	2617	DAWOX, AT
49	394106	2615.0	0.17%	3	7845	BEIDEAL, US
50	28126	2591.1	1.25%
Total		470181.7	20.85%

50 Most active Prefixes for the past 14 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	2a0f:7c40::/29	91504	1.89%	34600 -- AS6GNET, PL
2	2a03:eec0:3212::/48	72606	1.50%	22616 -- ZSCALER-SJC1, US
3	2a13:1c47:c0d0::/44	52707	1.09%	216193 -- AS-HYPERION-CLOUD HYPERION CLOUD SAS, FR
4	2a02:1391:5100::/40	40873	0.84%	21351 -- CANALPLUSTELECOM, GP
5	2a11:f2c0:ffc7::/48	40174	0.83%	216141 -- LEATYON-AS, IT
6	2a0d:2904::/44	27525	0.57%	205651 -- CATOFES, CN
7	2a14:7c0:5300::/48	26346	0.54%	214732 -- RATATOSKR RATATOSKR, US
8	2804:248:100::/40	19676	0.41%	28598 -- DB3 SERVICOS DE TELECOMUNICACOES S.A, BR
9	240d:c010:165::/48	19079	0.39%	139341 -- ACE-AS-AP ACE, SG
10	2a0c:b641:302::/47	18694	0.39%	204210 -- ZEUSPACKAGINGLTD, IE
11	2a0e:aa07:e044::/48	17233	0.36%	203664 -- LANXING-AS, CN
12	2a0a:e5c0:76::/48	16398	0.34%	209898 -- UNGLEICH-UNGLEICH-UPSTREAM, CH
13	2803:5d10::/32	15937	0.33%	272053 -- ANTUNES FLORES SERGIO OMAR NUEVA NET, AR
14	2001:67c:20fc::/48	13679	0.28%	210564 -- SWANTZTER-AS, SE
15	2001:930:108::/48	12535	0.26%	8386 -- KOCNET, TR
16	2001:930:124::/48	12533	0.26%	8386 -- KOCNET, TR
17	2001:930:126::/48	12532	0.26%	8386 -- KOCNET, TR
18	2001:930:154::/48	12531	0.26%	8386 -- KOCNET, TR
19	2001:930:127::/48	12529	0.26%	8386 -- KOCNET, TR
20	2001:930:114::/48	12528	0.26%	8386 -- KOCNET, TR
21	2a14:3f87:9800::/38	12211	0.25%	64289 -- MACARNE, US
22	2a05:4140:380::/42	11933	0.25%	204508 -- MLGT, IT
23	2a05:4140:304::/48	11788	0.24%	204508 -- MLGT, IT
24	2a05:4140:316::/48	11723	0.24%	204508 -- MLGT, IT
25	2a05:4140:333::/48	11624	0.24%	204508 -- MLGT, IT
26	2406:840:e620::/48	11057	0.23%	138535 -- FURDEVS-AS-AP Wu Qi, CN
27	2a0b:f8c0::/29	10915	0.23%	44297 -- ICODIA ICODIA NETWORK INTEGRITY, FR
28	2605:de00:bb::/48	10346	0.21%	30083 -- AS-30083-US-VELIA-NET, DE
29	2804:511c:8000::/33	9806	0.20%	268431 -- netX TI LTDA, BR
30	2804:511c::/33	9790	0.20%	268431 -- netX TI LTDA, BR
31	2a0a:5480:4::/48	9328	0.19%	211894 -- UNGLEICH-PLACE18, CH
32	2a0a:5480::/48	9323	0.19%	211894 -- UNGLEICH-PLACE18, CH
33	2a0a:5480:1::/48	9320	0.19%	211894 -- UNGLEICH-PLACE18, CH
34	2a0a:5480:3::/48	9307	0.19%	211894 -- UNGLEICH-PLACE18, CH
35	2a0a:5480:2::/48	9289	0.19%	211894 -- UNGLEICH-PLACE18, CH
36	2a0a:5480:5::/48	9284	0.19%	211894 -- UNGLEICH-PLACE18, CH
37	2a0a:5480:1ac::/48	9273	0.19%	211894 -- UNGLEICH-PLACE18, CH
38	2c0f:e8a8::/32	9029	0.19%	328631 -- BallitoISP, ZA
39	2a0a:e5c0:45::/48	8886	0.18%	199553 -- UNGLEICH-PLACE5, CH
40	2a0a:e5c0:16::/48	8883	0.18%	199553 -- UNGLEICH-PLACE5, CH
41	2a0a:e5c1:517::/48	8865	0.18%	199553 -- UNGLEICH-PLACE5, CH
42	2001:678:658::/48	7724	0.16%	214450 -- OGL-AS, DE
43	2a0e:b107:19cb::/48	7663	0.16%	214450 -- OGL-AS, DE
44	2a13:aac4:1000::/36	7600	0.16%	204508 -- MLGT, IT
45	2a07:e480:110::/48	7472	0.15%	210305 -- FRR-TESTLAB, US
46	2803:6610::/32	6976	0.14%	271944 -- AUDIBEL TELECOMUNICACIONES S.A., AR
47	2605:9cc0:c0e::/48	6689	0.14%	21664 -- AMZN-BYOASN, US 8987 -- AWS-GOVCLOUD AWS-GOVCLOUD, IE
48	2402:e580:74b8::/48	6656	0.14%	40138 -- MDNET, US
49	2800:540:2000::/44	6614	0.14%	27995 -- CLARO CHILE S.A., CL 6535 -- Telmex Servicios Empresariales S.A., CL
50	2600:6c7f:9370::/44	6109	0.13%	19115 -- CHARTER-19115-DC, US
Total		823102	16.99%

14 Day BGP Update Statistics Profile: 4-December-2025 00:00 - 18-December-2025 23:59 (UTC+1000)

Number of BGP Update Messages:	20672442
Number of Prefix Changes:	24225287
Number of Prefix Updates:	20672442
Number of Prefix Withdrawals:	3552845
Average Prefixes per BGP Update:	1.17
Average BGP Update Messages per second:	17.09
Average Prefix Updates per second:	20.03
Peak BGP Update Message Rate per second:	13745	(11:09:53 Mon, 8-Dec-2025)
Peak Prefix Update Rate per second:	13745	(11:09:53 Mon, 8-Dec-2025)
Peak Prefix Withdraw Rate per second:	994	(21:09:50 Mon, 15-Dec-2025, )
Number of RIB Prefix Updates:	4567527	(0.22 of recv'd updates)
Number of RIB Prefix Withdrawals:	280883	(0.08 of recv'd withdrawals)
Peak RIB Update Rate per second:	12527	(11:09:53 Mon, 8-Dec-2025)
Peak RIB Withdrawal Rate per second:	451	(18:03:24 Thu, 18-Dec-2025)
Seen Prefix Count:	249217
Updated Prefix Count:	172132
Stable Prefix Count:	77085
Seen Origin AS Count:	35946
Updated Origin AS Count:	30703
Stable Origin AS Count:	5243
Seen Unique Path Count:	163086
Updated Path Count:	143384
Stable Path Count:	19702

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