173.255.56.0/21

AS15147 · DEPARTMENT OF HOMELAND SECURITY

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Summary

Country	United States
Domain	dhs.gov
ASN	AS15147
Registry	ARIN
ID	ONENET

WHOIS Details

NetHandle:      NET-173-255-48-0-1
OrgID:          DHS-37
Parent:         NET-173-0-0-0-0
NetName:        ONENET
NetRange:       173.255.48.0 - 173.255.63.255
NetType:        allocation
RegDate:        2010-07-09
Updated:        2021-12-14
TechHandle:     DIA9-ARIN
AbuseHandle:    DIA9-ARIN
NOCHandle:      DIA9-ARIN
Source:         ARIN


OrgID:          DHS-37
OrgName:        DEPARTMENT OF HOMELAND SECURITY
CanAllocate:    
Street:         Department of Homeland Security
Street:         300 7th St SW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20024
RegDate:        2005-12-05
Updated:        2024-11-25
OrgAdminHandle: DHSNO2-ARIN
OrgTechHandle:  DHSNO2-ARIN
OrgAbuseHandle: DHSNO2-ARIN
OrgNOCHandle:   DHSNO2-ARIN
Source:         ARIN


POCHandle:      DIA9-ARIN
IsRole:         Y
LastName:       DHS IPv6 ADMINISTRATION
FirstName:      
Street:         7501 BOSTON BLVD
Street:         NDC II
Street:         Mail Stop d-145
City:           SPRINGFIELD
State/Prov:     VA
Country:        US
PostalCode:     22153
RegDate:        2005-11-30
Updated:        2013-09-24
OfficePhone:    +1-703-921-6347
OfficePhone:    +1-703-921-7595
MobilePhone:    +1-571-423-8956
FaxPhone:       +1-703-921-7595
Mailbox:        DHS.IPv6.ADMIN@dhs.gov
Mailbox:        JERRY.DOWELL@associates.dhs.gov
Source:         ARIN


POCHandle:      DHSNO2-ARIN
IsRole:         Y
LastName:       DHS-NOC
FirstName:      
Street:         701 D Streets NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     22201
RegDate:        2015-02-02
Updated:        2025-04-11
OfficePhone:    +1-877-347-1638
Mailbox:        DHSNOSCInfrastructureNetworkManagementTools@hq.dhs.gov
Source:         ARIN

Hosted domains

There are 4 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
173.255.59.57	femasid.info	3
173.255.58.206	mysupportservices.info	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

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Pingable IPs

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

IP Address	ASN	Details
173.255.58.155	AS15147 DEPARTMENT OF HOMELAND SECURITY	`6.04ms` from Ashburn, US
173.255.59.82	AS15147 DEPARTMENT OF HOMELAND SECURITY	`6.01ms` from Ashburn, US
173.255.57.238	AS15147 DEPARTMENT OF HOMELAND SECURITY	`6.04ms` from Ashburn, US
173.255.60.64	AS15147 DEPARTMENT OF HOMELAND SECURITY	`6.00ms` from Ashburn, US
173.255.61.100	AS15147 DEPARTMENT OF HOMELAND SECURITY	`5.42ms` from Ashburn, US
173.255.63.1	AS15147 DEPARTMENT OF HOMELAND SECURITY	`6.12ms` from Ashburn, 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
223.227.72.133	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`5.69ms` from Delhi, IN
113.187.14.181	AS45899 VNPT Corp	`5.36ms` from Hanoi, VN
123.191.115.21	AS4837 CHINA UNICOM China169 Backbone	`13.51ms` from Liaoyang, CN
37.158.166.229	AS3352 TELEFONICA DE ESPANA S.A.U.	`18.57ms` from Madrid, ES
109.189.162.85	AS2119 Telenor Norge AS	`6.09ms` from Oslo, NO
4.14.70.117	AS3356 Level 3 Parent, LLC	`0.61ms` from Phoenix, US
122.34.179.5	AS17858 LG POWERCOMM	`2.21ms` from Seoul, KR
114.36.244.21	AS3462 Data Communication Business Group	`0.63ms` from Taipei, TW
54.188.249.229	AS16509 Amazon.com, Inc.	`0.19ms` from Boardman, US
38.210.186.21	AS273172 INTERCARIBE TV S.A.S.	`13.53ms` from Bogota, CO
97.149.76.133	AS6167 Verizon Business	`9.52ms` from Chicago, US
79.242.18.21	AS3320 Deutsche Telekom AG	`8.10ms` from Duesseldorf, DE
45.157.2.21	AS210920 Civo LTD	`0.70ms` from Frankfurt am Main, DE
91.21.83.245	AS3320 Deutsche Telekom AG	`7.01ms` from Frankfurt am Main, DE
122.227.67.229	AS4134 CHINANET-BACKBONE	`7.30ms` from Hangzhou, CN
178.165.64.133	AS34700 MAXNET TELECOM, LTD	`6.65ms` from Kyiv, UA
113.9.192.21	AS4837 CHINA UNICOM China169 Backbone	`15.80ms` from Liaoyang, CN
86.178.32.229	AS2856 British Telecommunications PLC	`6.17ms` from London, GB
189.138.25.213	AS8151 UNINET	`2.54ms` from Mexico City, MX
103.123.79.5	AS132570 Saibaba Broadband Pvt Ltd	`0.19ms` from Mumbai, IN
171.37.178.69	AS4837 CHINA UNICOM China169 Backbone	`3.20ms` from Nanning, CN
24.136.110.165	AS12271 Charter Communications Inc	`1.61ms` from New York City, US
126.59.33.117	AS17676 SoftBank Corp.	`10.67ms` from Osaka, JP
186.209.59.101	AS53158 Net Turbo Telecom	`0.15ms` from Osasco, BR
163.247.120.85	AS17147 Ministerio del Interior y de Seguridad Publica - Gobierno de Chile	`0.73ms` from Santiago, CL

Traceroute

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

traceroute -a -n -q1 -f5 173.255.61.15

traceroute to 173.255.61.15 (173.255.61.15): 64 hops max, 52 byte packets

5 [AS36236] 104.225.114.81 0.414 ms

6 *

7 [AS13335] 173.245.63.119 6.713 ms

8 [AS13335] 172.71.193.191 0.633 ms

9 [AS13335] 172.71.193.115 0.738 ms

10 [AS13335] 172.71.193.90 0.681 ms

11 *

12 *

13 [AS15147] 173.255.61.15 6.449 ms

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On August 22nd 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.

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