Home Prefix Lookup209.165.128.0/18

209.165.128.0/18 - GENERAL COMMUNICATION (AS8047)

IPv4ARINallocatedAS8047GCI - GENERAL COMMUNICATION, INC. RPKI Valid

CIDR

209.165.128.0/18

IP Version

IPv4

Addresses

16.3K

Mask

/18 (255.255.192.0)

Country

🇺🇸 United States

City

Anchorage (North Star)

RIR

ARIN

Status

allocated

Allocated

1997-12-10

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
209.165.128.0/18	AS8047 GCI - GENERAL COMMUNICATION, INC.	Valid	ARINOther IRR	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
209.165.128.0/18	AS8047	/18	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS8047	ARIN	MNT-GENER-72	2025-04-15
AS8047	Other IRR	MAINT-AS8047	2025-03-07

Origin ASN

AS8047

GCI - GENERAL COMMUNICATION, INC.

Related Prefixes

More prefixes of AS8047

All prefixes of AS8047 →

Geolocation

Country🇺🇸United StatesUS

RegionAlaska

CityAnchorage (North Star)

Coordinates61.1973, -149.8780 ↗

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/209.165.128.0/18

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/209.165.128.0/18" | jq

External Links

RIPEstat