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 2 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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IP Ranges API

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
AS6994 Fastmetrics
AS7018 AT&T Enterprises, LLC
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Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS174 Cogent Communications
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. 1.23ms from San Jose, US
64.239.73.9 AS19858 M. Arthur Gensler Jr. & Associates, Inc. 1.53ms 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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131.252.76.34 AS6366 Portland State University 0.84ms from Portland, US
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65.129.104.50 AS209 CenturyLink Communications, LLC 11.14ms from Seattle, US
121.188.62.82 AS4766 Korea Telecom 3.10ms from Seoul, KR
111.227.243.2 AS4134 CHINANET-BACKBONE 13.67ms from Taiyuan, CN
124.193.221.50 AS4847 China Networks Inter-Exchange 6.45ms from Tianjin, CN
43.165.180.50 AS132203 Tencent Building, Kejizhongyi Avenue 0.54ms from Tokyo, JP
134.231.16.2 AS398754 CoastConnect LLC 11.51ms from Atlanta, US
173.48.178.194 AS701 Verizon Business 1.25ms from Boston, US

Traceroute

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

$
traceroute -a -n -q1 -f5 64.239.73.23
traceroute to 64.239.73.23 (64.239.73.23): 64 hops max, 52 byte packets
5 [AS174] 154.54.6.117 0.993 ms
8 [AS174] 38.142.249.98 1.638 ms
9 [AS19858] 64.239.73.23 2.102 ms
Measurement taken from IPinfo ProbeNet in Atlanta, US
On

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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 AS19858 at robtex.

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