AS1540 DNIC-ASBLK-01534-01546 - Headquarters, USAISC
Announced Prefixes (BGP)
1,323total
1,275 IPv448 IPv6
IPv4 Addresses
Allocated (RIR)1.8M
Announced (BGP)7.3M
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)5.8×10²⁵
Prefix Limit (IPv4)
5,000
Prefix Limit (IPv6)
200
Allocated
-
Announced Prefixes
(BGP)1,000 of 1,323|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | - | 2026-10-11 | |
6.16.66.0/24MOAS | No ROA | - | 2026-10-11 |
6.16.67.0/24MOAS | 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 1,000
1 / 100
Allocated Prefixes
(RIR)38Prefix | Country | RIR | Status |
|---|---|---|---|
| 138.27.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 139.231.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 140.196.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 140.202.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 141.107.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 143.79.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 143.134.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 144.147.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 144.244.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 144.245.0.0/16 | 🇺🇸 US | ARIN | allocated |
1-10 of 38
1 / 4
All 1,323 announced prefixes of AS1540 →
BGP Neighbours
(seen in AS paths)Upstreams (2)
Networks AS1540 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (3)
Networks whose own prefixes AS1540 passes on: usually its customers.
Other adjacent networks (1)
Adjacent to AS1540 in the transit part of AS paths: peers, providers or customers.
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 AS1540 should publish an ASPA object
- IPv4 transfer marketTransfers published by all five RIRs
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/1540Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/1540" | jq