AS number details

AS401851

County of San Diego  ·  ca.gov

United States

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AS401851 – County of San Diego

Field Value
Country United States
Website ca.gov
Hosted domains 0
Number of IPv4 3,584
Number of IPv6 0
ASN type Government
Registry arin
Allocated 4 months ago on Jul 21, 2025
Updated 4 months ago on Jul 21, 2025

IP Ranges

Netblock Company Num of IPs
170.213.18.0/23 County of San Diego 512
170.213.22.0/23 County of San Diego 512
170.213.2.0/24 County of San Diego 256
170.213.3.0/24 County of San Diego 256
170.213.4.0/24 County of San Diego 256
170.213.5.0/24 County of San Diego 256
170.213.6.0/24 County of San Diego 256
170.213.7.0/24 County of San Diego 256
170.213.131.0/24 County of San Diego 256
170.213.132.0/24 County of San Diego 256
170.213.133.0/24 County of San Diego 256
209.77.1.0/24 County of San Diego 256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS401851
                                                OrgID:          AS401851
                                                ASName:         AS401851
                                                ASNumber:       AS401851
                                                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 is 1 peer for this ASN.

Peers Name
AS7018 AT&T Enterprises, LLC
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Upstreams

There is 1 peer for this ASN.

upstreams Name
AS7018 AT&T Enterprises, LLC
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Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
170.213.133.254 AS401851 County of San Diego 4.59ms from Los Angeles, US
170.213.132.4 AS401851 County of San Diego 4.65ms from Los Angeles, US
209.77.1.2 AS401851 County of San Diego 5.75ms from Los Angeles, 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
46.176.217.27 AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 5.20ms from Athens, GR
85.72.77.187 AS6799 Ote SA (Hellenic Telecommunications Organisation) 6.54ms from Athens, GR
69.195.173.139 AS13414 Twitter Inc. 0.46ms from Atlanta, US
172.186.42.251 AS8075 Microsoft Corporation 0.23ms from Cardiff, GB
105.72.178.11 AS36884 Wana Corporate 6.56ms from Casablanca, MA
14.190.152.75 AS45899 VNPT Corp 5.50ms from Hanoi, VN
115.73.226.27 AS7552 Viettel Group 1.21ms from Ho Chi Minh City, VN
119.219.237.91 AS4766 Korea Telecom 7.02ms from Seoul, KR
175.116.144.11 AS9318 SK Broadband Co Ltd 2.20ms from Seoul, KR
140.123.237.11 AS1659 Taiwan Academic Network (TANet) Information Center 5.74ms from Taipei, TW
60.245.10.11 AS9676 SaveCom Internation Inc. 9.91ms from Taipei, TW
59.191.190.91 AS17530 Nihon Network Service Co, .Ltd. 3.83ms from Tokyo, JP
153.156.172.155 AS4713 NTT DOCOMO BUSINESS,Inc. 2.62ms from Tokyo, JP
24.35.58.59 AS12083 WideOpenWest Finance LLC 8.14ms from Atlanta, US
114.249.237.91 AS4808 China Unicom Beijing Province Network 3.61ms from Beijing, CN
123.145.123.75 AS4837 CHINA UNICOM China169 Backbone 1.66ms from Chongqing, CN
94.201.237.139 AS15802 Emirates Integrated Telecommunications Company PJSC 3.54ms from Dubai, AE
14.182.129.251 AS45899 VNPT Corp 4.67ms from Hanoi, VN
117.194.53.27 AS9829 National Internet Backbone 5.24ms from Kolkata, IN
34.17.165.155 AS396982 Google LLC 2.24ms from Milan, IT
3.224.117.187 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
116.45.22.43 AS17858 LG POWERCOMM 12.58ms from Seoul, KR
16.171.38.11 AS16509 Amazon.com, Inc. 1.08ms from Stockholm, SE
162.239.38.27 AS7018 AT&T Enterprises, LLC 6.18ms from Atlanta, US
217.144.190.155 AS210644 AEZA INTERNATIONAL LTD 0.47ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 209.77.1.1
traceroute to 209.77.1.1 (209.77.1.1): 64 hops max, 52 byte packets
2 [AS7018] 12.255.10.173 1.578 ms
3 *
5 [AS7018] 12.79.200.194 5.534 ms
6 [AS401851] 209.77.1.1 6.309 ms
Measurement taken from IPinfo ProbeNet in Los Angeles, US
On

Related Networks

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 AS401851 at robtex.

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