72.203.0.0/18

AS22773 · Cox Communications Inc.

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Summary

Country	United States
Domain	cox.com
ASN	AS22773
Parent Range	72.192.0.0/11
Registry	ARIN
ID	NETBLK-LV-RES-72-203-0-0

WHOIS Details

NetHandle:      NET-72-203-0-0-1
OrgID:          C06853497
Parent:         NET-72-192-0-0-1
NetName:        NETBLK-LV-RES-72-203-0-0
NetRange:       72.203.0.0 - 72.203.63.255
NetType:        reassignment
RegDate:        2017-12-14
Updated:        2017-12-14
Source:         ARIN


OrgID:          C06853497
OrgName:        Cox Communications Inc.
CanAllocate:    
Street:         1400 Lake Hearn DR.
City:           Atlanta
State/Prov:     GA
Country:        US
PostalCode:     30319
RegDate:        2017-12-14
Updated:        2017-12-14
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 72.203.0.0/18

Range	ASN	Company	Num of IPs
72.192.0.0/11	AS22773	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS395883	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS396389	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS62957	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS63182	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS64019	Cox Communications Inc.	2,097,152

Nearby Ranges

BGP prefixes that overlap with 72.203.0.0/16

Range	ASN	Company	Num of IPs
72.192.0.0/11	AS22773	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS395883	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS396389	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS62957	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS63182	Cox Communications Inc.	2,097,152
72.192.0.0/11	AS64019	Cox Communications Inc.	2,097,152
72.203.64.0/18	AS22773	Cox Communications Inc.	16,384
72.203.128.0/19	AS22773	Cox Communications	8,192
72.203.160.0/20	AS22773	Cox Communications	4,096
72.203.176.0/20	AS22773	Cox Communications Inc.	4,096
72.203.208.0/21	AS22773	Cox Communications Inc.	2,048
72.203.228.0/22	AS22773	Cox Communications Inc.	1,024
72.203.192.0/22	AS22773	Cox Communications Inc.	1,024
72.203.232.0/23	AS22773	Cox Communications Inc.	512
72.203.236.0/23	AS22773	Cox Communications	512
72.203.222.0/24	AS393991	ONE NEVADA CREDIT UNION	256
72.203.197.0/24	AS22773	Cox Communications Inc.	256

Hosted domains

There are 5 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
72.203.21.227	fleapower.com	2
72.203.12.204	kaboing.net	1
72.203.42.48	rcinnsight.com	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

7,657 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
72.203.41.103	AS22773 Cox Communications Inc.	`9.35ms` from Los Angeles, US
72.203.48.1	AS22773 Cox Communications Inc.	`6.16ms` from Los Angeles, US
72.203.37.1	AS22773 Cox Communications Inc.	`6.23ms` from Los Angeles, US
72.203.19.1	AS22773 Cox Communications Inc.	`6.32ms` from Los Angeles, US
72.203.24.1	AS22773 Cox Communications Inc.	`6.07ms` from Los Angeles, US
72.203.7.202	AS22773 Cox Communications Inc.	`6.73ms` from Los Angeles, US
72.203.25.41	AS22773 Cox Communications Inc.	`9.02ms` from Los Angeles, US
72.203.28.1	AS22773 Cox Communications Inc.	`6.17ms` from Los Angeles, US
72.203.31.1	AS22773 Cox Communications Inc.	`6.29ms` from Los Angeles, US
72.203.40.1	AS22773 Cox Communications Inc.	`6.44ms` from Los Angeles, US
72.203.2.2	AS22773 Cox Communications Inc.	`6.18ms` from Los Angeles, US
72.203.1.1	AS22773 Cox Communications Inc.	`6.34ms` from Los Angeles, US
72.203.8.1	AS22773 Cox Communications Inc.	`6.61ms` from Los Angeles, US
72.203.53.101	AS22773 Cox Communications Inc.	`9.25ms` from Los Angeles, US
72.203.43.230	AS22773 Cox Communications Inc.	`9.03ms` from Los Angeles, US
72.203.55.253	AS22773 Cox Communications Inc.	`9.57ms` from Los Angeles, US
72.203.20.26	AS22773 Cox Communications Inc.	`6.64ms` from Los Angeles, US
72.203.39.144	AS22773 Cox Communications Inc.	`6.53ms` from Los Angeles, US
72.203.26.1	AS22773 Cox Communications Inc.	`6.42ms` from Los Angeles, US
72.203.13.1	AS22773 Cox Communications Inc.	`6.68ms` from Los Angeles, US
72.203.10.1	AS22773 Cox Communications Inc.	`5.95ms` from Los Angeles, US
72.203.9.6	AS22773 Cox Communications Inc.	`9.55ms` from Los Angeles, US
72.203.36.1	AS22773 Cox Communications Inc.	`5.95ms` from Los Angeles, US
72.203.30.1	AS22773 Cox Communications Inc.	`6.64ms` from Los Angeles, US
72.203.32.2	AS22773 Cox Communications Inc.	`5.74ms` 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
3.211.92.82	AS14618 Amazon.com, Inc.	`0.69ms` from Ashburn, US
100.7.129.2	AS701 Verizon Business	`4.43ms` from Ashburn, US
71.87.153.242	AS20115 Charter Communications LLC	`9.59ms` from Atlanta, US
38.137.81.2	AS40128 Morristown Utility Systems	`6.17ms` from Atlanta, US
35.95.19.34	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
3.31.234.210	AS8987 Amazon Data Services Ireland Ltd	`0.34ms` from Boardman, US
73.47.181.82	AS7922 Comcast Cable Communications, LLC	`8.71ms` from Boston, US
174.143.24.2	AS33070 Rackspace Hosting	`1.14ms` from Dallas, US
174.16.114.34	AS209 CenturyLink Communications, LLC	`2.27ms` from Denver, US
88.217.183.210	AS8767 M-net Telekommunikations GmbH	`2.94ms` from Frankfurt am Main, DE
115.77.223.178	AS7552 Viettel Group	`3.36ms` from Ho Chi Minh City, VN
68.206.165.34	AS11427 Charter Communications Inc	`10.62ms` from Houston, US
116.3.77.2	AS4837 CHINA UNICOM China169 Backbone	`9.13ms` from Liaoyang, CN
185.19.12.162	AS60793 TELEFONICA TECH NORTHERN IRELAND LIMITED	`0.40ms` from London, GB
109.63.187.194	AS12714 PJSC MegaFon	`1.94ms` from Moscow, RU
107.181.114.66	AS19318 Interserver, Inc	`0.81ms` from New York City, US
108.27.213.50	AS701 Verizon Business	`2.16ms` from New York City, US
79.211.59.114	AS3320 Deutsche Telekom AG	`5.64ms` from Nuernberg, DE
162.228.164.194	AS7018 AT&T Enterprises, LLC	`12.26ms` from San Jose, US
188.113.121.226	AS49455 Telia Norge AS	`9.27ms` from Sandefjord, NO
200.79.11.18	AS8151 UNINET	`2.99ms` from Santiago de Queretaro, MX
59.23.196.130	AS4766 Korea Telecom	`4.92ms` from Seoul, KR
220.94.216.178	AS4766 Korea Telecom	`1.82ms` from Seoul, KR
108.17.156.2	AS701 Verizon Business	`8.56ms` from Ashburn, US
184.54.65.50	AS10796 Charter Communications Inc	`12.09ms` from Columbus, US

Traceroute

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

traceroute -a -n -q1 -m5 72.203.57.184

traceroute to 72.203.57.184 (72.203.57.184): 5 hops max, 52 byte packets

1 [AS15169] 142.251.65.157 99.088 ms

2 [AS22773] 68.105.30.141 107.827 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On December 28th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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