Data as of Nov 3, 2026
131.15.40.0/21
No anonymizer space · no proxy exits in 30 daysAir Force Systems Networking · reallocated from United States Department of Defense (DoD)
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 131.15.44.0/24 since Sep 28, 2026 | AS391 | Business | United States Department of Defense (DoD) via Air Force Systems Networking | |
| 131.15.47.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Air Force Systems Networking |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 131.15.0.0/16 | 65,536 | PETERSON-NET0 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Apr 1, 1996 | [email protected] |
| └ 131.15.0.0/16 | 65,536 | PETERSON-NET0 | Air Force Systems Networking (7ESG) · US | Reallocated | Aug 18, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 131.15.0.0/16
- Registration type
- Direct Allocation
- Record created
- Apr 1, 1996
- Legacy
- yes
- Reallocated to
- Air Force Systems Networking (7ESG)
- Reallocated
- Aug 18, 2025
Origin network
AS391
US
- Name
- Air Force Systems Networking
- Type
- Business
- Registered
- Aug 4, 1989
- Domain
- af.mil
- Industry
- Military, Defense, National Security, and International Affairs
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- May 2023
- Current origin since
- Dec 2024 · 1.9 yr
- Origin networks
- 4
- Last change of origin
- Apr 2025
Recorded history
History
- Handoffs
- 4
Whois
Registration for this announcement
- Range
- 131.15.0.0/16
- Netname
- PETERSON-NET0
- Registrant
- Air Force Systems Networking
- Organization
- Air Force Systems Networking (7ESG)
- Org address
- 501 EAST MOORE DR. BLDG 884 RM 1100 GUNTHER ANNEX, MAXWELL AFB, AL, 36114
- Org country
- US
- Type
- Reallocated
- Handle
- NET-131-15-0-0-2
- Parent
- NET-131-15-0-0-1
- Created
- Aug 18, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 1, 1996
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN