Home Prefix Lookup222.250.56.0/21

222.250.56.0/21 - AMBIT TW Ambit Microsystem Corporation (AS131591)

IPv4APNICannouncedAS131591AMBIT-AS-TW Ambit Microsystem Corporation RPKI Valid

CIDR

222.250.56.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇹🇼 Taiwan

City

Taipei

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
222.250.56.0/21	AS131591 AMBIT-AS-TW Ambit Microsystem Corporation	Valid	Other IRR	2026-10-11

Covering Prefix

2 less-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
222.250.0.0/16	AS17709 APT Asia Pacific Telecom	Valid	-	2026-10-11
222.250.0.0/18	AS131591 AMBIT-AS-TW Ambit Microsystem Corporation	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
222.250.0.0/18	AS17709	/24	apnic
222.250.0.0/16	AS17709	/24	apnic
222.250.0.0/16	AS131591	/24	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS131591	Other IRR	MAINT-AS4780	2026-03-13

Origin ASN

AS131591

AMBIT-AS-TW Ambit Microsystem Corporation

Related Prefixes

Covering prefix

222.250.0.0/18AS131591

More prefixes of AS131591

All prefixes of AS131591 →

Geolocation

Country🇹🇼TaiwanTW

RegionTaiwan

CityTaipei

Coordinates25.0501, 121.5650 ↗

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/222.250.56.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/222.250.56.0/21" | jq

External Links

RIPEstat