Data as of Nov 3, 2026
143.157.80.0/21
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
Risk
0 / 100 · Low
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 | Holder | RPKI |
|---|---|---|---|---|
| 143.156.0.0/15 since Mar 2020 | AS721 | 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 |
|---|---|---|---|---|---|---|
| 143.139.0.0 - 143.157.255.255 | 1,245,184 | AFIN-B | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Sep 21, 1990 | [email protected] |
| └ 143.139.0.0 - 143.157.255.255 | 1,245,184 | AFIN-B | Air Force Systems Networking (7ESG) · US | Reallocated | Aug 19, 2025 | [email protected] |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 143.139.0.0 - 143.157.255.255
- Registration type
- Direct Allocation
- Record created
- Sep 21, 1990
- Legacy
- yes
- Reallocated to
- Air Force Systems Networking (7ESG)
- Reallocated
- Aug 19, 2025
Origin network
AS427
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
Summary
Routing history
- Pattern
- Rotating
- First seen
- Dec 2022
- Current origin since
- Nov 3, 2026 · under a month
- Origin networks
- 2
- Last change of origin
- Jun 2024
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 143.139.0.0 - 143.157.255.255
- Netname
- AFIN-B
- 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-143-139-0-0-2
- Parent
- NET-143-139-0-0-1
- Created
- Aug 19, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 21, 1990
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN