AS21556 National Aeronautics and Space Administration
AS21556 (NARC-EROOT) is registered to National Aeronautics and Space Administration in US, through ARIN. It originates 4 prefixes in the global routing table.
Who holds AS21556
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
WHOIS recordARIN
# # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # ASNumber: 21556 ASName: NARC-EROOT ASHandle: AS21556 RegDate: 2012-11-01 Updated: 2024-03-21 Ref: https://rdap.arin.net/registry/autnum/21556 OrgName: National Aeronautics and Space Administration OrgId: NASA Address: IS05/Office of the Chief Information Officer City: MSFC StateProv: AL PostalCode: 35812 Country: US RegDate: Updated: 2026-07-06 Ref: https://rdap.arin.net/registry/entity/NASA OrgNOCHandle: NISN-ARIN OrgNOCName: NASA Information Services Network OrgNOCPhone: +1-256-961-4000 OrgNOCEmail: noc@nisn.nasa.gov OrgNOCRef: https://rdap.arin.net/registry/entity/NISN-ARIN OrgAbuseHandle: NASAA-ARIN OrgAbuseName: NASA Abuse OrgAbusePhone: +1-800-762-7472 OrgAbuseEmail: abuse@nasa.gov OrgAbuseRef: https://rdap.arin.net/registry/entity/NASAA-ARIN OrgTechHandle: IPAMO-ARIN OrgTechName: DDI Operations OrgTechPhone: +1-256-961-4726 OrgTechEmail: dns@nasa.gov OrgTechRef: https://rdap.arin.net/registry/entity/IPAMO-ARIN # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. #
What AS21556 announces
Prefixes originated by AS21556 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).
Announced prefixes
Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.
RPKI valid RPKI invalid no ROA covers it
Who AS21556 is reached through
The AS just before AS21556 in the paths our looking glass collectors hold, for 4 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.
Routing registry objects
From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.
Route objects with origin AS21556: RADB 2