AS18731 Cityside Fiber 🇺🇸 US
Announcing 7 prefixes, seen at the RIS collectors.
IPv4 prefixes
4
4,864 (19 × /24)
IPv6 prefixes
3
2 × /32
Upstreams
4
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS18731
- Name
- Cityside Fiber
- Organisation
- Cityside Fiber
- Country
- 🇺🇸 US
- RIR
- ARIN
- Allocated
- 2023-10-12
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
7 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 23.164.40.0/24 v4 | RPKI valid | 43 | 37721335618731 | 2026-09-18 |
| 128.177.138.0/24 v4 | RPKI valid | 41 | 34549646118731 | 2026-09-18 |
| 154.50.58.0/24 v4 | no ROA | 41 | 3454917418731 | 2026-09-18 |
| 157.238.80.0/20 v4 | RPKI valid | 42 | 34549291418731 | 2026-09-18 |
| 2607:73c0::/32 v6 | RPKI valid | 35 | 3454917418731 | 2026-09-18 |
| 2607:73c0::/33 v6 | RPKI valid | 35 | 37721335618731 | 2026-09-18 |
| 2607:73c0:8000::/33 v6 | RPKI valid | 35 | 37721335618731 | 2026-09-18 |