Autonomous System details

AS1280

Internet Systems Consortium, Inc. · isc.org

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AS1280 – Internet Systems Consortium, Inc.

Field	Value
Country	United States
Website	isc.org
Hosted domains	30
IPv4 addresses	23,552
IPv6 addresses	79,239,042,846,640,869,256,116,305,920
ASN type	Business
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 30 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
192.158.252.200	██████████	4
149.20.54.251	██████████	4
204.152.189.157	██████████	4
149.20.63.137	██████████	1
149.20.63.134	██████████	1
149.20.64.112	██████████	1
204.152.189.152	██████████	1
192.158.252.233	██████████	1
192.158.252.20	█████████	1

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Peers

There are 47 peers for this ASN.

Peers	Name
AS10310	Yahoo Holdings Inc.
AS11164	Internet2
AS11404	Wave Broadband
AS1299	Arelion Sweden AB
AS132203	Tencent Building, Kejizhongyi Avenue
AS13285	TalkTalk Communications Limited
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.
AS2152	CENIC
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
AS4780	Digital United Inc.
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 Infrastructure, LLC
AS714	Apple Inc.
AS7342	VeriSign Infrastructure & Operations
AS7575	Australian Academic and Research Network (AARNet)
AS7713	PT Telekomunikasi Indonesia
AS7922	Comcast Cable Communications, LLC
AS8674	Netnod AB
AS9498	BHARTI Airtel Ltd.
AS9505	Taiwan Internet Gateway
AS9680	HiNet Service Center in U.S.A
AS9924	Taiwan Fixed Network, Telco and Network Service Provider.

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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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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:ffff:3::181	AS1280 Internet Systems Consortium, Inc.	`0.86ms` from San Jose, US
2001:4f8:8::5	AS1280 Internet Systems Consortium, Inc.	`0.84ms` from San Jose, US
2001:4f8:4:fffe::26	AS1280 Internet Systems Consortium, Inc.	`0.87ms` from San Jose, US
149.20.8.7	AS1280 Internet Systems Consortium, Inc.	`0.88ms` from Fremont, US
192.158.252.230	AS1280 Internet Systems Consortium, Inc.	`0.84ms` from Fremont, US
149.20.7.37	AS1280 Internet Systems Consortium, Inc.	`0.84ms` from Fremont, 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
69.68.144.64	AS2379 CenturyLink Communications, LLC	`6.01ms` from Atlanta, US
48.212.5.0	AS8075 Microsoft Corporation	`0.79ms` from Chicago, US
193.248.100.64	AS3215 Orange S.A.	`10.94ms` from Le Lamentin, MQ
86.139.43.192	AS2856 British Telecommunications PLC	`6.50ms` from London, GB
105.172.161.192	AS37119 UNITEL SA	`1.28ms` from Luanda, AO
80.40.88.32	AS13285 TalkTalk Communications Limited	`5.78ms` from Manchester, GB
34.158.4.224	AS396982 Google LLC	`0.10ms` from Melbourne, AU
5.145.205.0	AS44265 OOO Smoltelecom	`6.83ms` from Moscow, RU
84.189.34.128	AS3320 Deutsche Telekom AG	`2.95ms` from Nuernberg, DE
88.185.164.128	AS12322 Free SAS	`10.31ms` from Paris, FR
121.140.168.96	AS4766 Korea Telecom	`1.06ms` from Seoul, KR
34.190.55.16	AS15169 Google LLC	`0.17ms` from Singapore, SG
36.232.106.16	AS3462 Data Communication Business Group	`1.63ms` from Taichung, TW
175.166.232.112	AS4837 CHINA UNICOM China169 Backbone	`7.83ms` from Tieling, CN
64.24.182.0	AS7029 Windstream Communications LLC	`0.53ms` from Atlanta, US
44.230.80.16	AS16509 Amazon.com, Inc.	`0.12ms` from Boardman, US
14.236.14.176	AS45899 VNPT Corp	`1.19ms` from Da Nang, VN
98.156.80.16	AS11427 Charter Communications Inc	`13.50ms` from Dallas, US
108.158.223.176	AS16509 Amazon.com, Inc.	`0.41ms` from Delhi, IN
93.203.24.240	AS3320 Deutsche Telekom AG	`3.52ms` from Frankfurt am Main, DE
187.204.127.32	AS8151 UNINET	`0.96ms` from Guadalajara, MX
36.71.228.80	AS7713 PT Telekomunikasi Indonesia	`1.79ms` from Jakarta, ID
97.83.163.112	AS20115 Charter Communications LLC	`18.93ms` from Minneapolis, US
84.154.88.64	AS3320 Deutsche Telekom AG	`4.64ms` from Nuernberg, DE
79.76.80.0	AS54253 Oracle Corporation	`5.83ms` from Riyadh, SA

Traceroute

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

traceroute -a -n -q1 -f3 -m10 204.152.187.146

traceroute to 204.152.187.146 (204.152.187.146): 10 hops max, 52 byte packets

3 [AS6939] 184.104.188.145 1.276 ms

4 *

5 [AS6939] 184.104.198.254 1.722 ms

6 [AS6939] 64.62.180.46 1.261 ms

7 [AS1280] 149.20.7.29 7.15 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Fremont, US

On January 30th 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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