Home ASN LookupAS747

AS747 DNIC-AS-00747 - Headquarters, USAISC

🇺🇸

ARINassigned

Announced Prefixes (BGP)

47total

46 IPv41 IPv6

IPv4 Addresses

Allocated (RIR)65,536

Announced (BGP)145,920

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)1.2×10²⁴

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

🇺🇸 US

RIR

ARIN

Status

assigned

Allocated

1990-09-25

Announced Prefixes

(BGP)47

Prefix	RPKI	IRR	Last Seen
6.148.95.0/24	No ROA	-	2026-10-10
143.68.64.0/19	No ROA	-	2026-10-10
143.68.96.0/21	No ROA	-	2026-10-10
143.73.173.0/24	No ROA	-	2026-10-10
143.73.240.0/20	No ROA	-	2026-10-10
143.74.251.0/24	No ROA	-	2026-10-10
143.76.112.0/20	No ROA	-	2026-10-10
143.76.227.0/24	No ROA	-	2026-10-10
143.76.239.0/24	No ROA	-	2026-10-10
143.86.128.0/20	No ROA	-	2026-10-10

1-10 of 47

1 / 5

Allocated Prefixes

(RIR)1

Prefix	Country	RIR	Status
147.242.0.0/16	🇺🇸 US	ARIN	allocated

All 47 announced prefixes of AS747 →

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS747 hands its own prefixes to: transit providers, or peers at an exchange.

AS27066United States Department Of Defense (DoD)47

Downstreams (1)

Networks whose own prefixes AS747 passes on: usually its customers.

AS5277United States Department Of Defense (DoD)18

ASPA

No ASPA

External Links

ARIN Whois RIPEstat

Learn more

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 AS747 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

Open

GEThttps://api.ipctl.io/v1/asn/747

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

curl -s "https://api.ipctl.io/v1/asn/747" | jq