Data as of Nov 7, 2026
56.105.72.0/21
No anonymizer space · no proxy exits in 30 daysUnited States Postal Service
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 56.105.64.0/18 since Mar 2009 | AS5774 | Business | United States Postal Service | |
| 56.105.0.0/16 since Jun 2021 | AS5774 | Business | United States Postal Service |
Network & registry
Origin network
AS5774
US
- Name
- United States Postal Service
- Type
- Education
- Registered
- Oct 18, 1995
- Domain
- usps.gov
- Industry
- Service
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2015
- Current origin since
- Sep 2015 · 11 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 56.
105. 0. 0/ 16 - Netname
- USPS1
- Registrant
- United States Postal Service
- Organization
- United States Postal Service (USPS-3-Z)
- Org address
- 4200 Wake Forest Road, Raleigh, NC, 27668-9007
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-56-105-0-0-1
- Parent
- NET-56-0-0-0-0
- Created
- Nov 2, 1992
- RIR
- ARIN
- Country
- US
- Delegated
- Nov 2, 1992
- Status
- assigned
Report abuse
Abuse contact
- domainadmin@
imail. usps. gov - Name
- Domain Admin
- Phone
- +1-800-877-7435
- Handle
- ZU38-ARIN