AS43 BNL-AS - Brookhaven National Laboratory
🇺🇸ARINassignedASPA Published
Announced Prefixes (BGP)
10total
7 IPv43 IPv6
IPv4 Addresses
Allocated (RIR)66,560
Announced (BGP)67,328
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)3.9×10²⁵
Routing hygiene
Score 37/100 · Medium riskRPKI ROA coverage
10%
no RPKI invalid prefixes
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
1
diversity 0/100
- 90% of announced prefixes (9 of 10) have no valid ROA
- Only one upstream seen in the AS paths of its routes
Based on 10 announced prefixes, updated daily (2026-10-26). How the score works · RPKI explained
Announced Prefixes
(BGP)10|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | Other IRR | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
| No ROA | Other IRR | 2026-10-26 | |
| No ROA | Other IRR | 2026-10-26 | |
| No ROA | Other IRR | 2026-10-26 | |
| No ROA | Other IRR | 2026-10-26 | |
| No ROA | Other IRR | 2026-10-26 | |
| No ROA | Other IRR | 2026-10-26 | |
| Valid | ARIN | 2026-10-26 |
Allocated Prefixes
(RIR)5Prefix | Country | RIR | Status |
|---|---|---|---|
| 130.199.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 192.12.15.0/24 | 🇺🇸 US | ARIN | allocated |
| 192.33.128.0/24 | 🇺🇸 US | ARIN | allocated |
| 192.153.161.0/24 | 🇺🇸 US | ARIN | allocated |
| 192.203.218.0/24 | 🇺🇸 US | ARIN | allocated |
All 10 announced prefixes of AS43 →
Upstream Providers(1)
| ASN | Name |
|---|---|
| AS293 | 🇺🇸ESNET - ESnet |
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS43 hands its own prefixes to: transit providers, or peers at an exchange.
- AS293ESnet10
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
- How to run an ASPA checkVerify the upstream providers listed above
- 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/43Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/43" | jq