173.255.48.0/21

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:      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:        [email protected]
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:        [email protected]
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 173.255.0.0/16

Range	ASN	Company	Num of IPs
173.255.64.0/20	AS11084	Huron Telecommunications Cooperative Limited	4,096
173.255.80.0/20	AS14161	Land O Lakes, Inc.	4,096
173.255.96.0/20	AS23308	UTILITY TELEPHONE, INC.	4,096
173.255.112.0/20	AS396982	Google LLC	4,096
173.255.32.0/20	AS400224	Tarleton State University	4,096
173.255.72.0/21	AS399494	Brooke Telecom Cooperative Limited	2,048
173.255.16.0/21	AS35911	Cochrane Telecom Services	2,048
173.255.168.0/23	AS22781	STL-SFO-SS	512
173.255.166.0/23	AS13213	STL-DAL-THG	512
173.255.164.0/23	AS3223	STL-OTP-VO	512
173.255.170.0/23	AS55286	STL-YUL-SM	512
173.255.144.0/24	AS204648	Calligo Limited	256
173.255.148.0/24	AS204648	Calligo Limited	256
173.255.146.0/24	AS204648	Calligo Limited	256
173.255.150.0/24	AS204648	Calligo Limited	256
173.255.174.0/24	AS206804	STL-ATH-EE	256
173.255.172.0/24	AS54203	STL-MCI-NOC	256
173.255.173.0/24	AS62651	STL-BOG-DP	256
173.255.175.0/24	AS54138	STL-GDL-EU	256

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
173.255.49.100	AS15147 DEPARTMENT OF HOMELAND SECURITY	`4.88ms` from San Jose, US
173.255.50.39	AS15147 DEPARTMENT OF HOMELAND SECURITY	`5.02ms` from San Jose, US
173.255.52.161	AS15147 DEPARTMENT OF HOMELAND SECURITY	`4.74ms` from San Jose, US
173.255.51.175	AS15147 DEPARTMENT OF HOMELAND SECURITY	`4.86ms` from San Jose, US
173.255.55.36	AS15147 DEPARTMENT OF HOMELAND SECURITY	`4.31ms` from San Jose, US
173.255.53.14	AS15147 DEPARTMENT OF HOMELAND SECURITY	`5.04ms` from San Jose, 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
48.209.74.21	AS8075 Microsoft Corporation	`0.29ms` from Amsterdam, NL
73.17.5.197	AS7922 Comcast Cable Communications, LLC	`8.94ms` from Boston, US
103.131.15.53	AS9507 NextHop Pty Ltd	`0.18ms` from Brisbane, AU
184.71.240.117	AS6327 Shaw Communications	`0.88ms` from Calgary, CA
104.225.141.197	AS396949 Kamatera, Inc.	`0.90ms` from Dallas, US
79.239.74.245	AS3320 Deutsche Telekom AG	`3.26ms` from Duesseldorf, DE
4.182.140.101	AS8075 Microsoft Corporation	`0.37ms` from Frankfurt am Main, DE
165.154.192.21	AS142002 Scloud Pte Ltd	`0.55ms` from Ho Chi Minh City, VN
46.26.64.101	AS12430 VODAFONE ESPANA S.A.U.	`1.33ms` from Madrid, ES
79.156.72.245	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.19ms` from Madrid, ES
83.37.150.197	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.98ms` from Madrid, ES
80.169.76.37	AS8220 COLT Technology Services Group Limited	`0.44ms` from Madrid, ES
123.233.253.133	AS4837 CHINA UNICOM China169 Backbone	`5.33ms` from Qingdao, CN
18.209.216.149	AS14618 Amazon.com, Inc.	`0.16ms` from Reston, US
187.25.213.37	AS22085 Claro S/A	`16.19ms` from Rio de Janeiro, BR
52.78.59.213	AS16509 Amazon.com, Inc.	`0.19ms` from Seoul, KR
13.209.201.69	AS16509 Amazon.com, Inc.	`0.20ms` from Seoul, KR
118.42.32.165	AS4766 Korea Telecom	`3.38ms` from Seoul, KR
117.186.32.197	AS24400 Shanghai Mobile Communications Co.,Ltd.	`3.06ms` from Shanghai, CN
207.192.178.165	AS63005 Nexusguard, Inc	`0.36ms` from Taipei, TW
172.7.9.149	AS7018 AT&T Enterprises, LLC	`8.40ms` from Atlanta, US
154.239.31.53	AS36992 ETISALAT MISR	`10.83ms` from Cairo, EG
108.69.82.53	AS7018 AT&T Enterprises, LLC	`8.24ms` from Chicago, US
64.86.134.133	AS6453 TATA COMMUNICATIONS (AMERICA) INC	`0.32ms` from Dallas, US
124.90.36.117	AS4837 CHINA UNICOM China169 Backbone	`5.13ms` from Hangzhou, CN

Traceroute

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

traceroute -a -n -q1 173.255.49.233

traceroute to 173.255.49.233 (173.255.49.233): 64 hops max, 52 byte packets

1 [AS31898] 140.91.234.92 0.075 ms

2 [AS31898] 140.204.60.72 0.348 ms

3 *

4 [AS13335] 172.68.188.119 1.074 ms

5 [AS13335] 104.22.22.39 0.712 ms

6 [AS13335] 104.22.22.33 0.811 ms

7 [AS13335] 104.22.22.62 0.824 ms

8 *

9 *

10 [AS15147] 173.255.49.233 5.116 ms

Measurement taken from

IPinfo ProbeNet in San Jose, US

On January 9th 2026

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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