Autonomous System details

AS1280

Internet Systems Consortium, Inc. · isc.org

United States

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AS1280 – Internet Systems Consortium, Inc.

Field	Value
Country	United States
Website	isc.org
Hosted domains	28
IPv4 addresses	23,552
IPv6 addresses	79,239,042,846,640,869,662,700,000,000
ASN type	Hosting
Registry	arin
Allocated	35 years ago on Jul 31, 1991
Updated	14 years ago on Apr 02, 2012

Netblock	Company	Num of IPs
204.152.184.0/21	Internet Systems Consortium, Inc.	2,048
149.20.0.0/24	Internet Systems Consortium, Inc.	256
149.20.1.0/24	Internet Systems Consortium, Inc.	256
149.20.6.0/24	Internet Systems Consortium, Inc.	256
149.20.7.0/24	Internet Systems Consortium, Inc.	256
149.20.8.0/24	Internet Systems Consortium, Inc.	256
149.20.10.0/24	Internet Systems Consortium, Inc.	256
149.20.12.0/24	Internet Systems Consortium, Inc.	256
149.20.13.0/24	Internet Systems Consortium, Inc.	256
149.20.14.0/24	Internet Systems Consortium, Inc.	256
149.20.15.0/24	Internet Systems Consortium, Inc.	256
149.20.16.0/24	Internet Systems Consortium, Inc.	256
149.20.17.0/24	Internet Systems Consortium, Inc.	256
149.20.18.0/24	Internet Systems Consortium, Inc.	256
149.20.19.0/24	Internet Systems Consortium, Inc.	256
149.20.20.0/24	Internet Systems Consortium, Inc.	256
149.20.21.0/24	Internet Systems Consortium, Inc.	256
149.20.22.0/24	Internet Systems Consortium, Inc.	256
149.20.23.0/24	Internet Systems Consortium, Inc.	256
149.20.24.0/24	Internet Systems Consortium, Inc.	256
149.20.25.0/24	Internet Systems Consortium, Inc.	256
149.20.26.0/24	Internet Systems Consortium, Inc.	256
149.20.27.0/24	Internet Systems Consortium, Inc.	256
149.20.28.0/24	Internet Systems Consortium, Inc.	256
149.20.29.0/24	Internet Systems Consortium, Inc.	256
149.20.30.0/24	Internet Systems Consortium, Inc.	256
149.20.31.0/24	Internet Systems Consortium, Inc.	256
149.20.32.0/24	Internet Systems Consortium, Inc.	256
149.20.33.0/24	Internet Systems Consortium, Inc.	256
149.20.34.0/24	Internet Systems Consortium, Inc.	256
149.20.35.0/24	Internet Systems Consortium, Inc.	256
149.20.36.0/24	Internet Systems Consortium, Inc.	256
149.20.37.0/24	Internet Systems Consortium, Inc.	256
149.20.38.0/24	Internet Systems Consortium, Inc.	256
149.20.39.0/24	Internet Systems Consortium, Inc.	256
149.20.40.0/24	Internet Systems Consortium, Inc.	256
149.20.41.0/24	Internet Systems Consortium, Inc.	256
149.20.42.0/24	Internet Systems Consortium, Inc.	256
149.20.43.0/24	Internet Systems Consortium, Inc.	256
149.20.44.0/24	Internet Systems Consortium, Inc.	256
149.20.45.0/24	Internet Systems Consortium, Inc.	256
149.20.46.0/24	Internet Systems Consortium, Inc.	256
149.20.47.0/24	Internet Systems Consortium, Inc.	256
149.20.48.0/24	Internet Systems Consortium, Inc.	256
149.20.49.0/24	Internet Systems Consortium, Inc.	256
149.20.50.0/24	Internet Systems Consortium, Inc.	256
149.20.51.0/24	Internet Systems Consortium, Inc.	256
149.20.52.0/24	Internet Systems Consortium, Inc.	256
149.20.53.0/24	Internet Systems Consortium, Inc.	256
149.20.54.0/24	Internet Systems Consortium, Inc.	256
149.20.55.0/24	Internet Systems Consortium, Inc.	256
149.20.56.0/24	Internet Systems Consortium, Inc.	256
149.20.58.0/24	Internet Systems Consortium, Inc.	256
149.20.59.0/24	Internet Systems Consortium, Inc.	256
149.20.60.0/24	Internet Systems Consortium, Inc.	256
149.20.61.0/24	Internet Systems Consortium, Inc.	256
149.20.62.0/24	Internet Systems Consortium, Inc.	256
149.20.63.0/24	Internet Systems Consortium, Inc.	256
149.20.64.0/24	Internet Systems Consortium, Inc.	256
149.20.65.0/24	Internet Systems Consortium, Inc.	256
149.20.72.0/24	Internet Systems Consortium, Inc.	256
149.20.73.0/24	Internet Systems Consortium, Inc.	256
149.20.74.0/24	Internet Systems Consortium, Inc.	256
149.20.75.0/24	Internet Systems Consortium, Inc.	256
149.20.76.0/24	Internet Systems Consortium, Inc.	256
149.20.77.0/24	Internet Systems Consortium, Inc.	256
149.20.78.0/24	Internet Systems Consortium, Inc.	256
149.20.79.0/24	Internet Systems Consortium, Inc.	256
149.20.80.0/24	Internet Systems Consortium, Inc.	256
149.20.81.0/24	Internet Systems Consortium, Inc.	256
149.20.82.0/24	Internet Systems Consortium, Inc.	256
149.20.83.0/24	Internet Systems Consortium, Inc.	256
149.20.84.0/24	Internet Systems Consortium, Inc.	256
149.20.85.0/24	Internet Systems Consortium, Inc.	256
149.20.86.0/24	Internet Systems Consortium, Inc.	256
149.20.87.0/24	Internet Systems Consortium, Inc.	256
149.20.88.0/24	Internet Systems Consortium, Inc.	256
149.20.90.0/24	Internet Systems Consortium, Inc.	256
149.20.91.0/24	Internet Systems Consortium, Inc.	256
149.20.92.0/24	Internet Systems Consortium, Inc.	256
149.20.93.0/24	Internet Systems Consortium, Inc.	256
149.20.94.0/24	Internet Systems Consortium, Inc.	256
149.20.95.0/24	Internet Systems Consortium, Inc.	256
192.111.107.0/24	Shockwave Engineering	256
192.158.252.0/24	Internet Systems Consortium, Inc.	256
204.152.184.0/24	Internet Systems Consortium, Inc.	256
204.152.185.0/24	Internet Systems Consortium, Inc.	256
204.152.186.0/24	Internet Systems Consortium, Inc.	256
204.152.187.0/24	Internet Systems Consortium, Inc.	256
204.152.188.0/24	Internet Systems Consortium, Inc.	256
204.152.189.0/24	Internet Systems Consortium, Inc.	256
204.152.190.0/24	Internet Systems Consortium, Inc.	256
204.152.191.0/24	Internet Systems Consortium, Inc.	256

Netblock	Company
2001:4f8::/32	Internet Systems Consortium, Inc.
2001:4f8:4::/46	Internet Systems Consortium, Inc.
2001:4f8::/48	Internet Systems Consortium, Inc.
2001:4f8:4::/48	Internet Systems Consortium, Inc.
2001:4f8:8::/48	Internet Systems Consortium, Inc.
2001:4f8:fffe::/48	Internet Systems Consortium, Inc.
2001:4f8:ffff::/48	Internet Systems Consortium, Inc.

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WHOIS Details

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                                                ASHandle:       AS1280
                                                OrgID:          AS1280
                                                ASName:         AS1280
                                                ASNumber:       AS1280
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 28 domain names hosted across 18 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
192.158.252.52	██████████	5
149.20.54.251	██████████	4
204.152.189.157	██████████	4
149.20.64.112	██████████	1
204.152.191.37	█████████	1
204.152.191.5	█████████	1
149.20.63.134	██████████	1
192.158.252.20	█████████	1
192.158.252.15	██████████	1
149.20.63.137	██████████	1

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Peers

There are 41 peers for this ASN.

Peers	Name
AS10310	Yahoo Holdings Inc.
AS11164	Internet2
AS11404	Wave Broadband
AS1299	Arelion Sweden AB
AS132203	Tencent Building, Kejizhongyi Avenue
AS13335	Cloudflare, Inc.
AS14061	DigitalOcean, LLC
AS15169	Google LLC
AS16276	OVH SAS
AS16509	Amazon.com, Inc.
AS19151	BroadbandONE, LLC
AS199524	G-Core Labs S.A.
AS22697	Roblox
AS24151	China Internet Network Infomation Center
AS2914	NTT America, Inc.
AS30133	Internet Systems Consortium, Inc.
AS32787	Akamai Technologies, Inc.
AS3292	TDC Holding A/S
AS3557	Internet Systems Consortium, Inc.
AS36692	Cisco OpenDNS, LLC
AS38158	PT. Cyberindo Aditama
AS3856	Packet Clearing House, Inc.
AS40627	RingCentral Inc
AS41095	IPTP LTD
AS42	WoodyNet, Inc.
AS45102	Alibaba (US) Technology Co., Ltd.
AS4648	Global-Gateway Internet
AS49544	i3D.net B.V
AS55818	MC-IX Matrix Internet Exchange RS-1
AS57976	Blizzard Entertainment, Inc
AS62955	eBay, Inc
AS6762	TELECOM ITALIA SPARKLE S.p.A.
AS6939	Hurricane Electric LLC
AS7091	Next Level Connect
AS714	Apple Inc.
AS7342	VeriSign Infrastructure & Operations
AS7922	Comcast Cable Communications, LLC
AS8674	Netnod AB
AS9498	BHARTI Airtel Ltd.
AS9505	Taiwan Internet Gateway
AS9680	HiNet Service Center in U.S.A

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ASN API & Database

Upstreams

There are 4 upstreams for this ASN.

upstreams	Name
AS1299	Arelion Sweden AB
AS2914	NTT America, Inc.
AS6762	TELECOM ITALIA SPARKLE S.p.A.
AS6939	Hurricane Electric LLC

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ASN API & Database

Downstreams

There are 7 downstreams for this ASN.

Downstreams	Name
AS1299	Arelion Sweden AB
AS24151	China Internet Network Infomation Center
AS2914	NTT America, Inc.
AS30133	Internet Systems Consortium, Inc.
AS3557	Internet Systems Consortium, Inc.
AS6762	TELECOM ITALIA SPARKLE S.p.A.
AS6939	Hurricane Electric LLC

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ASN API & Database

Pingable IPs

6 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
2001:4f8:8::5	AS1280 Internet Systems Consortium, Inc.	`0.83ms` from San Jose, US
192.158.252.230	AS1280 Internet Systems Consortium, Inc.	`0.72ms` from San Jose, US
2001:4f8:4:fffe::26	AS1280 Internet Systems Consortium, Inc.	`0.85ms` from San Jose, US
149.20.8.5	AS1280 Internet Systems Consortium, Inc.	`0.78ms` from San Jose, US
149.20.7.37	AS1280 Internet Systems Consortium, Inc.	`0.77ms` from San Jose, US
2001:4f8:ffff:6::50:1	AS1280 Internet Systems Consortium, Inc.	`0.83ms` from San Jose, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
184.1.187.128	AS19901 Brightspeed	`8.16ms` from Ashburn, US
171.234.241.224	AS7552 Viettel Group	`11.55ms` from Hanoi, VN
140.211.11.128	AS3701 University of Oregon	`2.10ms` from Hillsboro, US
99.104.160.192	AS7018 AT&T Enterprises, LLC	`7.30ms` from Los Angeles, US
186.48.130.96	AS6057 Administracion Nacional de Telecomunicaciones	`1.86ms` from Montevideo, UY
216.49.44.96	AS3737 PenTeleData Inc.	`9.27ms` from New York City, US
52.242.63.208	AS8075 Microsoft Corporation	`0.22ms` from Quebec, CA
69.40.85.176	AS7029 Windstream Communications LLC	`0.40ms` from San Jose, US
187.202.248.128	AS8151 UNINET	`4.10ms` from Santiago de Queretaro, MX
189.142.5.64	AS8151 UNINET	`4.93ms` from Santiago de Queretaro, MX
122.252.101.0	AS18318 LG HelloVision Corp.	`5.78ms` from Seoul, KR
218.81.116.80	AS4812 China Telecom (Group)	`3.25ms` from Shanghai, CN
4.156.34.96	AS8075 Microsoft Corporation	`0.33ms` from Ashburn, US
1.92.213.224	AS55990 Huawei Cloud Service data center	`8.09ms` from Beijing, CN
20.246.98.16	AS8075 Microsoft Corporation	`0.24ms` from Boydton, US
34.62.127.192	AS396982 Google LLC	`0.17ms` from Brussels, BE
179.154.183.224	AS28573 Claro NXT Telecomunicacoes Ltda	`13.38ms` from Curitiba, BR
79.126.14.96	AS12389 PJSC Rostelecom	`6.48ms` from Kazan, RU
193.248.100.64	AS3215 Orange S.A.	`10.55ms` from Le Lamentin, MQ
51.145.119.80	AS8075 Microsoft Corporation	`0.25ms` from London, GB
37.221.120.112	AS210218 Open Fiber S.P.A.	`1.05ms` from Milan, IT
174.114.135.32	AS812 Rogers Communications Canada Inc.	`6.39ms` from Montreal, CA
193.150.71.16	AS211446 A GROUP LLC	`1.34ms` from Moscow, RU
217.196.157.160	AS5404 ASN conova communications GmbH	`2.28ms` from Munich, DE
168.197.150.0	AS265483 JAPNET NETWORK BR SERV TELECOM LTDA - ME - ME	`1.50ms` from Rio de Janeiro, BR

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

traceroute -a -n -q1 -m6 149.20.47.166

traceroute to 149.20.47.166 (149.20.47.166): 6 hops max, 52 byte packets

1 [AS263175] 186.2.246.129 0.329 ms

2 *

3 [AS263175] 186.2.247.236 0.299 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Cayenne, GF

On April 24th 2026

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS1280 at robtex.

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