Data as of Nov 3, 2026
131.38.0.0/16
No anonymizer space · no proxy exits in 30 daysAir Force Systems Networking · reallocated from United States Department of Defense (DoD)
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Recent change
New origin Nov 3, 2026
from AS427 Air Force Systems Networking, after 1.3 years unannounced
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | RPKI |
|---|---|---|---|
| 131.32.0.0/11 since Dec 2010 | AS721 | Business |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 131.38.120.0/24 since Nov 3, 2026 | AS409 | 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 |
|---|---|---|---|---|---|---|
| 131.38.0.0/16 | 65,536 | HICKAM1-NET | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Mar 28, 1989 | [email protected] |
| └ 131.38.0.0/16 | 65,536 | HICKAM1-NET | Air Force Systems Networking (7ESG) · US | Reallocated | Aug 18, 2025 | [email protected] |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 131.38.0.0/16
- Registration type
- Direct Allocation
- Record created
- Mar 28, 1989
- Legacy
- yes
- Reallocated to
- Air Force Systems Networking (7ESG)
- Reallocated
- Aug 18, 2025
Origin network
AS409
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
Covering aggregate above, the prefix's own history below
latest 12 of 23 stints
Summary
Routing history
- Pattern
- Rotating
- First seen
- May 2005
- Current origin since
- Nov 3, 2026 · under a month
- Origin networks
- 4
- Last change of origin
- Jul 2025
Recorded history
History
- Stints on record
- 23
- Handoffs
- 5
Whois
Registration for this announcement
- Range
- 131.38.0.0/16
- Netname
- HICKAM1-NET
- 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-131-38-0-0-2
- Parent
- NET-131-38-0-0-1
- Created
- Aug 18, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 28, 1989
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN