HomeASN LookupAS101

AS101

🇺🇸

WASH-NSF-AS - University of Washington57de9c13c3e431cbf6c579baeaefbb82

ARINassigned
Announced Prefixes (BGP)
9total
4 IPv45 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)8,192
Announced (BGP)12,288
IPv6 Addresses ⓘ
Allocated (RIR)7.9×10^28
Announced (BGP)1.3×10^29
Prefix Limit (IPv4)
10
Prefix Limit (IPv6)
20
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
3/31/1987

Announced Prefixes

(BGP)9
|
Prefix
RPKI
IRR
Last Seen
207.231.240.0/20MOAS
 Valid
RADB
5/25/2026
209.124.176.0/20
 Valid
RADB
5/25/2026
209.124.176.0/21
 Valid
RADB
5/25/2026
209.124.184.0/21
 Valid
RADB
5/25/2026
2001:504:b::/48
 Valid
RADB
5/25/2026
2001:1860::/32
 Valid
RADB
5/25/2026
2001:1860:4000::/34
 Valid
RADB
5/25/2026
2001:1860:8000::/34
 Valid—5/25/2026
2001:1860:c000::/34
 Valid—5/25/2026

Allocated Prefixes

(RIR)4
Prefix
Country
RIR
Status
207.231.240.0/20🇺🇸 USARINallocated
209.124.176.0/20🇺🇸 USARINallocated
2001:504:b::/48🇺🇸 USARINallocated
2001:1860::/32🇺🇸 USARINallocated

Downstream Customers(2)

ASNName
AS54027🇺🇸SEATTLE-PUBLIC-SCHOOLS - Seattle Public Schools
AS54429🇺🇸LOCAL-CONNECTIVITY-LAB - Local Connectivity Lab
ASPA
No ASPA0 upstreams, 2 downstreams
Listed as Upstream Provider by
2 ASNs
View full ASPA details →
External Links
ARIN WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/101

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

curl -s "https://api.ipctl.io/v1/asn/101" | jq