Home Prefix Lookup123.193.40.0/21

123.193.40.0/21 - Kbro (AS38841)

IPv4APNICannouncedAS38841kbro-AS-TW - kbro CO. Ltd. RPKI Valid

CIDR

123.193.40.0/21

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
123.193.40.0/21	AS38841 kbro-AS-TW - kbro CO. Ltd.	Valid	-	2026-10-12

Covering Prefix

2 less-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
123.192.0.0/14	AS38841 kbro-AS-TW - kbro CO. Ltd.	Valid	-	2026-10-12
123.192.0.0/15	AS38841 kbro-AS-TW - kbro CO. Ltd.	Valid	-	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
123.193.40.0/21	AS38841	/21	apnic
123.193.32.0/20	AS38841	/20	apnic
123.193.32.0/19	AS9924	/19	apnic
123.193.0.0/18	AS9924	/18	apnic
123.192.0.0/14	AS9924	/14	apnic
123.192.0.0/14	AS38841	/24	apnic

Origin ASN

AS38841

kbro-AS-TW - kbro CO. Ltd.

Related Prefixes

Covering prefix

123.192.0.0/15AS38841

More prefixes of AS38841

All prefixes of AS38841 →

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/123.193.40.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/123.193.40.0/21" | jq

External Links

RIPEstat