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AS11160 – COSTAR GROUP Inc.

Field	Value
Country	United States
Website	costargroup.com
Hosted domains	2
IPv4 addresses	512
IPv6 addresses	0
ASN type	Business
Registry	arin
Allocated	28 years ago on May 01, 1998
Updated	2 years ago on Aug 01, 2024

Netblock	Company	Num of IPs
38.64.74.0/24	COSTAR GROUP INC	256
204.253.48.0/24	COSTAR REALTY	256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS11160
                                                OrgID:          AS11160
                                                ASName:         AS11160
                                                ASNumber:       AS11160
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 2 domain names hosted across 2 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
204.253.48.130	██████████	1
204.253.48.165	██████████	1

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Peers

There are 5 peers for this ASN.

Peers	Name
AS1239	Cogent Communications, LLC
AS174	Cogent Communications, LLC
AS3356	Level 3 Parent, LLC
AS3549	Level 3 Parent, LLC
AS701	Verizon Business

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ASN API & Database

Upstreams

There are 4 upstreams for this ASN.

upstreams	Name
AS174	Cogent Communications, LLC
AS3356	Level 3 Parent, LLC
AS3549	Level 3 Parent, LLC
AS701	Verizon Business

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Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address	ASN	Details
38.64.74.132	AS11160 COSTAR GROUP Inc.	`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
74.138.90.168	AS10796 Charter Communications Inc	`10.52ms` from Columbus, US
52.210.52.56	AS16509 Amazon.com, Inc.	`0.46ms` from Dublin, IE
18.153.251.8	AS16509 Amazon.com, Inc.	`0.18ms` from Frankfurt am Main, DE
208.111.61.120	AS40300 DR Fortress, LLC	`0.18ms` from Honolulu, US
112.148.92.88	AS17858 LG POWERCOMM	`1.47ms` from Incheon, KR
58.231.14.232	AS9318 SK Broadband Co Ltd	`6.83ms` from Incheon, KR
35.178.207.200	AS16509 Amazon.com, Inc.	`0.13ms` from London, GB
90.168.201.216	AS12479 Orange Espagne SA	`7.05ms` from Madrid, ES
206.214.234.56	AS14593 Space Exploration Technologies Corporation	`0.44ms` from Nairobi, KE
18.230.226.136	AS16509 Amazon.com, Inc.	`0.15ms` from Osasco, BR
187.45.244.184	AS27715 Locaweb Serviços de Internet S/A	`1.12ms` from Osasco, BR
175.236.202.152	AS4766 Korea Telecom	`1.60ms` from Seoul, KR
175.24.177.184	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.52ms` from Shanghai, CN
2.67.139.232	AS44034 Hi3G Access AB	`12.82ms` from Stockholm, SE
85.226.182.72	AS8434 Telenor Sverige AB	`1.31ms` from Stockholm, SE
113.227.113.152	AS4837 CHINA UNICOM China169 Backbone	`8.39ms` from Tieling, CN
60.73.94.8	AS17676 SoftBank Corp.	`2.71ms` from Tokyo, JP
96.1.11.72	AS852 TELUS Communications Inc.	`19.56ms` from Toronto, CA
81.197.219.8	AS719 Elisa Oyj	`1.00ms` from Helsinki, FI
51.94.127.248	AS16509 Amazon.com, Inc.	`6.06ms` from Madrid, ES
88.33.91.168	AS3269 Telecom Italia S.p.A.	`4.44ms` from Milan, IT
217.254.35.184	AS3320 Deutsche Telekom AG	`2.27ms` from Munich, DE
180.29.241.40	AS4713 NTT DOCOMO BUSINESS,Inc.	`13.15ms` from Osaka, JP
47.6.190.152	AS20115 Charter Communications LLC	`12.69ms` from Redding, US
54.88.95.8	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US

Traceroute

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

traceroute -a -n -q1 38.64.74.194

traceroute to 38.64.74.194 (38.64.74.194): 64 hops max, 52 byte packets

1 [AS15169] 142.251.65.164 0.788 ms

2 *

3 [AS3356] 4.69.160.97 2.622 ms

4 [AS3356] 4.38.68.202 5.746 ms

5 [AS11160] 38.64.74.194 5.719 ms

Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On May 4th 2026

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 AS11160 at robtex.

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