AS number details

AS19858

M. Arthur Gensler Jr. & Associates, Inc.  ·  gensler.com

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AS19858 – M. Arthur Gensler Jr. & Associates, Inc.

Field Value
Country United States
Website gensler.com
Hosted domains 1
Number of IPv4 512
Number of IPv6 0
ASN type Business
Registry arin
Allocated 25 years ago on Feb 21, 2001
Updated 4 months ago on Jun 30, 2025
Netblock Company Num of IPs
64.239.72.0/24 M. Arthur Gensler Jr. & Associates, Inc. 256
64.239.73.0/24 M. Arthur Gensler Jr. & Associates, Inc. 256

There are no known IPv6 addresses belonging to this network

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WHOIS Details


                                                ASHandle:       AS19858
                                                OrgID:          AS19858
                                                ASName:         AS19858
                                                ASNumber:       AS19858
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

                                            
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Hosted Domains

There is 1 domain name hosted across 1 IP address on this ASN.

IP Address Domain Domains on this IP
64.239.73.45 ██████████ 1

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Useful for Cybersecurity

Peers

There are 3 peers for this ASN.

Peers Name
AS174 Cogent Communications, LLC
AS6994 Fastmetrics
AS7018 AT&T Enterprises, LLC
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Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS174 Cogent Communications, LLC
AS6994 Fastmetrics
AS7018 AT&T Enterprises, LLC
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
64.239.72.5 AS19858 M. Arthur Gensler Jr. & Associates, Inc. 1.21ms from Santa Clara, US
64.239.73.9 AS19858 M. Arthur Gensler Jr. & Associates, Inc. 1.77ms from Atlanta, 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
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178.68.35.2 AS12389 PJSC Rostelecom 9.46ms from Stockholm, SE
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202.244.240.2 AS2907 Research Organization of Information and Systems, National Institute of Informatics 1.34ms from Tokyo, JP
84.20.50.194 AS6730 Sunrise GmbH 0.99ms from Zuerich, CH
92.97.113.66 AS5384 Emirates Internet 2.73ms from Al Fujairah City, AE
80.114.162.2 AS33915 Vodafone Libertel B.V. 1.16ms from Amsterdam, NL
110.170.175.178 AS7470 TRUE INTERNET Co.,Ltd. 2.27ms from Bangkok, TH
171.100.48.34 AS7470 TRUE INTERNET Co.,Ltd. 2.23ms from Bangkok, TH
132.255.22.34 AS27951 Media Commerce Partners S.A 14.57ms from Bogota, CO

Traceroute

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

$
traceroute -a -n -q1 64.239.73.221
traceroute to 64.239.73.221 (64.239.73.221): 64 hops max, 52 byte packets
1 [AS63023] 38.121.43.1 7.137 ms
3 *
4 *
5 *
6 [AS174] 154.54.6.101 0.486 ms
7 [AS174] 154.54.165.138 1.937 ms
8 [AS174] 154.24.59.82 2.533 ms
9 [AS174] 154.24.2.142 2.495 ms
10 [AS174] 38.142.249.98 1.798 ms
11 [AS19858] 64.239.73.221 2.221 ms
Measurement taken from IPinfo ProbeNet in Atlanta, 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 AS19858 at robtex.

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