AS21556 NARC-EROOT - National Aeronautics and Space Administration

🇺🇸

ARINassigned

Announced Prefixes (BGP)

4total

2 IPv42 IPv6

IPv4 Addresses

Allocated (RIR)512

Announced (BGP)512

IPv6 Addresses

Allocated (RIR)1.2×10²⁴

Announced (BGP)2.4×10²⁴

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

RIR

Status

assigned

Allocated

2012-11-01

Announced Prefixes

(BGP)4

Prefix	RPKI	IRR	Last Seen
192.12.28.0/24	No ROA	-	2026-10-11
192.203.230.0/24	No ROA	Other IRR	2026-10-11
2001:500:a8::/48	No ROA	Other IRR	2026-10-11
2620:126:e000::/48	No ROA	-	2026-10-11

(RIR)3

Prefix	Country	RIR	Status
192.12.28.0/24	🇺🇸 US	ARIN	allocated
192.203.230.0/24	🇺🇸 US	ARIN	allocated
2001:500:a8::/48	🇺🇸 US	ARIN	allocated

(seen in AS paths)

Networks AS21556 hands its own prefixes to: transit providers, or peers at an exchange.

Registry transfers of AS21556 between organisations.

Date	Resource	From	To	Type
2024-03-21	AS21556	NASA Ames Research Center 🇺🇸 US ARIN	National Aeronautics and Space Administration 🇺🇸 US ARIN	M&A

ASPA

No ASPA

External Links

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS21556 should publish an ASPA object
IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

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

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