Data as of Nov 3, 2026
151.207.252.0/22
No anonymizer space · no proxy exits in 30 daysUnited States Patent and Trademark Office
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 151.207.240.0/20 since Feb 2021 | AS5744 | Business | United States Patent and Trademark Office |
Network & registry
Origin network
AS5744
US
- Name
- United States Patent and Trademark Office
- Type
- Business
- Registered
- Sep 20, 1995
- Domain
- uspto.gov
- Industry
- Government and Regulatory Agencies, Administrations, Departments, and Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Feb 2012
- Current origin since
- Mar 2024 · 2.7 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 151.207.252.0/22 | AS5744 | /22 | ARIN | RPKI valid |
| 151.207.240.0/20 | AS5744 | /20 | ARIN | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS5744 | ARIN | USPTO | MNT-USPTO | Jun 26, 2024 |
Whois
Registration for this announcement
- Range
- 151.207.0.0/16
- Netname
- PTONET
- Registrant
- United States Patent and Trademark Office
- Organization
- United States Patent and Trademark Office (USPTO)
- Org address
- 600 Dulaney Street, Alexandria, VA, 22314
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-151-207-0-0-1
- Parent
- NET-151-0-0-0-0
- Created
- Sep 25, 1991
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 25, 1991
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Chief Watch Officer
- Phone
- +1-571-272-6700
- Handle
- CWO91-ARIN