Home Prefix Lookup220.100.192.0/18

220.100.192.0/18 - Internet Initiative Japan (AS2497)

IPv4APNICallocatedAS2497IIJ - Internet Initiative Japan Inc. RPKI Valid

CIDR

220.100.192.0/18

IP Version

IPv4

Addresses

16.3K

Mask

/18 (255.255.192.0)

Country

🇯🇵 Japan

City

Chiyoda City (Kanda-jinbōchō)

RIR

APNIC

Status

allocated

Allocated

2004-02-04

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
220.100.192.0/18	AS2497 IIJ - Internet Initiative Japan Inc.	Valid	Other IRR	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
220.100.192.0/18	AS2497	/18	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS2497	Other IRR	MAINT-AS2497	2023-11-13

Origin ASN

AS2497

IIJ - Internet Initiative Japan Inc.

Related Prefixes

More prefixes of AS2497

All prefixes of AS2497 →

Geolocation

Country🇯🇵JapanJP

RegionTokyo

CityChiyoda City (Kanda-jinbōchō)

Coordinates35.6970, 139.7560 ↗

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 APNIC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/220.100.192.0/18

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

curl -s "https://api.ipctl.io/v1/prefix/220.100.192.0/18" | jq

External Links

RIPEstat