AS21784 AUCRWWL - The Robert W. Woodruff Library of the Atlanta University Center, Inc.

🇺🇸

ARINassigned

Announced Prefixes (BGP)

3total

3 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)512

Announced (BGP)1,024

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

RIR

Status

assigned

Allocated

2012-06-07

Announced Prefixes

(BGP)3

Prefix	RPKI	IRR	Last Seen
216.150.22.0/23	Valid	ARIN	2026-10-10
216.150.22.0/24	Valid	ARIN	2026-10-10
216.150.23.0/24	Invalid	-	2026-10-10

(RIR)1

Prefix	Country	RIR	Status
216.150.22.0/23	🇺🇸 US	ARIN	allocated

(seen in AS paths)

Networks AS21784 hands its own prefixes to: transit providers, or peers at an exchange.

Registry transfers of AS21784 between organisations.

Date	Resource	From	To	Type
2024-02-29	AS21784	Atlanta University Center, Inc. 🇺🇸 US ARIN	The Robert W. Woodruff Library of the Atlanta University Center, Inc. 🇺🇸 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 AS21784 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/21784" | jq