AS40271 SFMIX-TRANSIT - San Francisco Metropolitan Internet Exchange (SFMIX)
🇺🇸ARINassignedASPA Published
Announced Prefixes (BGP)
3total
2 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)768
Announced (BGP)768
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)1.2×10²⁴
Routing hygiene
Score 10/100 · Low riskRPKI ROA coverage
100%
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
- Only one upstream seen in the AS paths of its routes
Based on 3 announced prefixes, updated daily (2026-10-20). How the score works · RPKI explained
Announced Prefixes
(BGP)3|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | ARIN | 2026-10-24 | |
| Valid | ARIN | 2026-10-24 | |
| Valid | ARIN | 2026-10-24 |
Allocated Prefixes
(RIR)2Prefix | Country | RIR | Status |
|---|---|---|---|
| 149.112.115.0/24 | 🇺🇸 US | ARIN | allocated |
| 149.112.188.0/23 | 🇺🇸 US | ARIN | allocated |
All 3 announced prefixes of AS40271 →
Upstream Providers(1)
| ASN | Name |
|---|---|
| AS6939 | 🇺🇸HURRICANE - Hurricane Electric LLC |
Downstream Customers(1)
| ASN | Name |
|---|---|
| AS35008 | 🇺🇸KERFUFFLE - Kerfuffle, LLC |
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS40271 hands its own prefixes to: transit providers, or peers at an exchange.
- AS6939Hurricane Electric3
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/40271Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/40271" | jq