AS15257 NBT-LABS - NBT Labs, LLC
🇺🇸ARINassigned
Announced Prefixes (BGP)
1total
1 IPv40 IPv6
IPv4 Addresses
Allocated (RIR)4,096
Announced (BGP)256
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)0
Announced Prefixes
(BGP)1|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | ARIN | 2026-10-11 |
Allocated Prefixes
(RIR)2Prefix | Country | RIR | Status |
|---|---|---|---|
| 173.195.224.0/20 | 🇺🇸 US | ARIN | allocated |
| 2605:5f00::/32 | 🇺🇸 US | ARIN | allocated |
All 1 announced prefix of AS15257 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS15257 hands its own prefixes to: transit providers, or peers at an exchange.
- AS21700Neptune Networks1
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 AS15257 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/15257Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/15257" | jq