Autonomous System details

AS401551

Anthropic, PBC · anthropic.com

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AS401551 – Anthropic, PBC

Field	Value
Country	United States
Website	anthropic.com
Hosted domains	0
IPv4 addresses	0
IPv6 addresses	0
ASN type	Inactive
Registry	arin
Allocated	a month ago on Jan 14, 2026
Updated	a month ago on Jan 14, 2026

IP Ranges

There are no known IP addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS401551
                                                OrgID:          AS401551
                                                ASName:         AS401551
                                                ASNumber:       AS401551
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are no domains currently hosted on this ASN.

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Peers

There are no peers for this ASN.

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Upstreams

There are no upstreams for this ASN.

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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

No IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

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
40.79.21.191	AS8075 Microsoft Corporation	`0.19ms` from Boydton, US
178.117.114.207	AS6848 Telenet BV	`5.78ms` from Brussels, BE
82.106.128.255	AS3269 Telecom Italia S.p.A.	`0.65ms` from Milan, IT
192.83.221.15	AS33490 Comcast Cable Communications, LLC	`1.34ms` from Portland, US
185.174.208.79	AS206262 TelKos L.L.C	`1.04ms` from Pristina, XK
3.211.124.63	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
61.52.248.15	AS4837 CHINA UNICOM China169 Backbone	`1.52ms` from Zhengzhou, CN
192.185.46.143	AS19871 Network Solutions, LLC	`0.29ms` from Atlanta, US
101.201.78.31	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.97ms` from Beijing, CN
13.247.1.95	AS16509 Amazon.com, Inc.	`0.14ms` from Cape Town, ZA
196.12.237.111	AS36884 Wana Corporate	`2.69ms` from Casablanca, MA
90.234.65.47	AS3301 Telia Company AB	`16.35ms` from Copenhagen, DK
13.89.58.191	AS8075 Microsoft Corporation	`0.35ms` from Des Moines, US
35.178.13.255	AS16509 Amazon.com, Inc.	`0.17ms` from London, GB
81.107.135.143	AS5089 Virgin Media Limited	`4.62ms` from London, GB
52.189.234.111	AS8075 Microsoft Corporation	`0.53ms` from Melbourne, AU
69.225.226.191	AS7018 AT&T Enterprises, LLC	`4.59ms` from San Jose, US
221.145.211.79	AS4766 Korea Telecom	`3.65ms` from Seoul, KR
1.231.99.175	AS9318 SK Broadband Co Ltd	`1.89ms` from Seoul, KR
163.16.143.159	AS1659 Taiwan Academic Network (TANet) Information Center	`7.67ms` from Taipei, TW
212.244.199.31	AS5617 Orange Polska Spolka Akcyjna	`6.22ms` from Wrocław, PL
85.5.41.15	AS3303 Swisscom (Switzerland) Ltd	`2.38ms` from Zuerich, CH
122.164.90.255	AS24560 Bharti Airtel Ltd., Telemedia Services	`0.64ms` from Chennai, IN
93.237.32.239	AS3320 Deutsche Telekom AG	`8.75ms` from Frankfurt am Main, DE
113.173.71.239	AS45899 VNPT Corp	`1.42ms` from Ho Chi Minh City, VN

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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 AS401551 at robtex.

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