Data as of Nov 7, 2026
173.255.48.0/21
No anonymizer space · no proxy exits in 30 daysDepartment of Homeland Security
Network & registry
Origin network
AS15147
US
- Name
- Department of Homeland Security
- Type
- Business
- Registered
- Nov 3, 2006
- Domain
- dhs.gov
- Industry
- Government and Public Administration
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 2016
- Current origin since
- Oct 2016 · 10 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS15147 | ARIN | Department of Homeland Security | MNT-DHS-37 | Apr 28, 2026 |
Whois
Registration for this announcement
- Range
- 173.
255. 48. 0/ 20 - Netname
- ONENET
- Registrant
- Department of Homeland Security
- Organization
- Department of Homeland Security (DHS-37)
- Org address
- Department of Homeland Security, Washington, DC, 20528
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-173-255-48-0-1
- Parent
- NET-173-0-0-0-0
- Created
- Jul 9, 2010
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 9, 2010
- Status
- assigned
Report abuse
Abuse contact
- DHSNOSCInfrastructureNetworkManagementTools@
hq. dhs. gov - Name
- DHS-NOC
- Phone
- +1-877-347-1638
- Handle
- DHSNO2-ARIN