Data as of Nov 3, 2026
131.81.0.0/16
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcements
Nesting
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Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 131.81.2.0/23 since Sep 2018 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.5.0/24 since Dec 2019 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.9.0/24 since Sep 2014 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.10.0/24 since Aug 2019 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.17.0/24 since Sep 2014 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.20.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.24.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.28.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.32.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.36.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.40.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.44.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.48.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.52.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.56.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.60.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.64.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.89.0/24 since Aug 2020 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.90.0/23 since Sep 2014 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.92.0/22 since Sep 2014 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.99.0/24 since Apr 2019 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.103.0/24 since Sep 2019 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.104.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.108.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.112.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.116.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.120.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.124.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.128.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.132.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.136.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.140.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.144.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.148.0/22 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.162.0/23 since Apr 2018 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.164.0/23 since Jun 2018 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.170.0/24 since Apr 2019 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.191.0/24 since Sep 2019 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.199.0/24 since May 2018 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.202.0/23 since Aug 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.206.0/23 since Apr 2018 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.224.0/24 since Feb 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.226.0/24 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.228.0/24 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.230.0/24 since Apr 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.232.0/24 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.234.0/24 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.249.0/24 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.251.0/24 since Apr 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 131.81.253.0/24 since Mar 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 131.81.0.0/16 | 65,536 | DGSC | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Oct 25, 1988 | [email protected] |
| └ 131.81.0.0/16 | 65,536 | DGSC | DoD Network Information Center (DNIC) · US | Reallocated | Aug 28, 2025 | [email protected] |
Network & registry
Announced by
Covering announcement 131.80.0.0/14
- Prefix
- 131.80.0.0/14
- Announced by
- AS721 United States Department of Defense (DoD)
- Type
- Business
- RPKI
- No RPKI
- RIR
- ARIN
Registry
Holder
- Organization
- Not stated by the registry
Origin network
AS721
US
- Name
- United States Department of Defense (DoD)
- Type
- Business
- Domain
- mail.mil
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 131.80.0.0/14
131.80.0.0/14
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Dec 2010 · 16 yr
- Origin networks
- 2
- Last change of origin
- Dec 2010
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
131.80.0.0/14 spans several registrations: 8 records are listed under Registrations.
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 25, 1988
- Status
- assigned