HomeASN LookupAS21525

AS21525

🇺🇸

AS-SPL - Seattle Public Library18e6b17f5ea12a9dfb6ca9b1feb4755c

ARINassigned
Announced Prefixes (BGP)
2total
1 IPv41 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)4,352
Announced (BGP)4,096
IPv6 Addresses ⓘ
Allocated (RIR)1.2×10^24
Announced (BGP)1.2×10^24
Prefix Limit (IPv4)
10
Prefix Limit (IPv6)
5
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
5/16/2001

Announced Prefixes

(BGP)2
|
Prefix
RPKI
IRR
Last Seen
66.212.64.0/20
No ROA—5/25/2026
2620:18::/48
No ROA—5/25/2026

Allocated Prefixes

(RIR)3
Prefix
Country
RIR
Status
66.212.64.0/20🇺🇸 USARINallocated
198.137.188.0/24🇺🇸 USARINallocated
2620:18::/48🇺🇸 USARINallocated
ASPA
No ASPA
External Links
ARIN WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/21525

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/21525" | jq