HomeASN LookupAS21556

AS21556

🇺🇸

NARC-EROOT - National Aeronautics and Space Administration1f99771bc3e23e6097509a331544ab65

ARINassigned
Announced Prefixes (BGP)
4total
2 IPv42 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)512
Announced (BGP)512
IPv6 Addresses ⓘ
Allocated (RIR)1.2×10^24
Announced (BGP)2.4×10^24
Prefix Limit (IPv4)
10
Prefix Limit (IPv6)
10
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
11/1/2012

Announced Prefixes

(BGP)4
|
Prefix
RPKI
IRR
Last Seen
192.12.28.0/24
No ROA—5/25/2026
192.203.230.0/24
No ROA
RADB
5/25/2026
2001:500:a8::/48
No ROA
RADB
5/25/2026
2620:126:e000::/48
No ROA—5/25/2026

Allocated Prefixes

(RIR)3
Prefix
Country
RIR
Status
192.12.28.0/24🇺🇸 USARINallocated
192.203.230.0/24🇺🇸 USARINallocated
2001:500:a8::/48🇺🇸 USARINallocated
ASPA
No ASPA
External Links
ARIN WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/21556

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

curl -s "https://api.ipctl.io/v1/asn/21556" | jq