AS25538 IN-ULM Internet Ulm/Neu-Ulm e.V.
🇩🇪Org handle: ORG-IUen1-RIPE
RIPE NCCallocatedASPA Published
Announced Prefixes (BGP)
5total
4 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)5,632
Announced (BGP)5,632
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)7.9×10²⁸
Routing hygiene
Score 7/100 · 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
2
diversity 32/100
- Routes concentrated on one upstream (80% of routes)
Based on 5 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained
Announced Prefixes
(BGP)5|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
45.12.171.0/24MOAS | Valid | RIPE | 2026-10-26 |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 |
Allocated Prefixes
(RIR)5Prefix | Country | RIR | Status |
|---|---|---|---|
| 45.12.171.0/24 | 🇩🇪 DE | RIPE | assigned |
| 91.210.72.0/22 | 🇩🇪 DE | RIPENCC | allocated |
| 193.110.90.0/24 | 🇩🇪 DE | RIPENCC | assigned |
| 217.10.0.0/20 | 🇩🇪 DE | RIPENCC | allocated |
| 2001:1410::/32 | 🇩🇪 DE | RIPENCC | allocated |
All 5 announced prefixes of AS25538 →
Upstream Providers(4)
Downstream Customers(1)
| ASN | Name |
|---|---|
| AS219090 | 🇩🇪FIBERGARDEN Temporaerhaus e.V. |
BGP Neighbours
(seen in AS paths)Upstreams (2)
Networks AS25538 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (1)
Networks whose own prefixes AS25538 passes on: usually its customers.
- AS219090FIBERGARDEN Temporaerhaus E.V1
Other adjacent networks (1)
Adjacent to AS25538 in the transit part of AS paths: peers, providers or customers.
- AS553BELWUE Universitaet Stuttgart2
Abuse Contact
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 RIPE NCC 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/25538Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/25538" | jq