AS721 DNIC-ASBLK-00721-00726 - United States Department of Defense DoD
🇺🇸ARINassigned
Announced Prefixes (BGP)
234total
232 IPv42 IPv6
IPv4 Addresses
Allocated (RIR)40.2M
Announced (BGP)73.1M
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)1.5×10²⁹
Announced Prefixes
(BGP)234|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | - | 2026-10-11 | |
| No ROA | - | 2026-10-11 | |
| No ROA | - | 2026-10-11 | |
| No ROA | - | 2026-10-11 | |
| No ROA | - | 2026-10-11 | |
| No ROA | - | 2026-10-11 | |
| No ROA | - | 2026-10-11 | |
| No ROA | - | 2026-10-11 | |
| No ROA | - | 2026-10-11 | |
| No ROA | - | 2026-10-11 |
1-10 of 234
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Allocated Prefixes
(RIR)72Prefix | Country | RIR | Status |
|---|---|---|---|
| 55.0.0.0/8 | 🇺🇸 US | ARIN | allocated |
| 130.22.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 131.16.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 131.73.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 131.86.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 131.87.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 134.80.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 134.135.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 134.233.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 134.235.0.0/16 | 🇺🇸 US | ARIN | allocated |
1-10 of 72
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All 234 announced prefixes of AS721 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS721 hands its own prefixes to: transit providers, or peers at an exchange.
- AS3356Level 3 Parent234
ASPA
No ASPA
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- ASPA explainedWhy AS721 should publish an ASPA object
- IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/721Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/721" | jq