Seattle Public Library
Data as of 2026-08-09
BGP inherited
Cluster stats
| Netblocks | 4 · 4,097 IPv4 addresses |
| IPv6 | 2 prefixes (largest 2620:18::/48) |
| All fragments | 11 blocks across 2 clusters |
| Cluster ID | 218212997 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 6 shared RIR contact/maintainer handles |
| Registry names | 3 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (4)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 66.212.64.0/20 | Seattle Public Library | BGP | ANNOUNCED | ● high |
| 206.81.80.196/32 | Seattle Public Library | PEERINGDB | ASSIGNED | ● high |
| 2001:504:16::5415/128 | Seattle Public Library | PEERINGDB | ASSIGNED | ● high |
| 2620:18::/48 | Seattle Public Library | BGP | ANNOUNCED | ● high |
IPv6 ranges (2)
Network trust
what's this?
RPKI hygiene: D
how networks compare →
40.0%
of checked blocks have valid RPKI ROA coverage
(2 of 5)
No discrepancies found among checked blocks.
NIC Handles
AS21525
AS21525
NETWO3608-ARIN
NETWO3608-ARIN
SPL
SPLNE-ARIN