Home Prefix Lookup183.91.51.0/24

183.91.51.0/24 - CTGNET (AS23764)

IPv4APNICannouncedAS23764CTGNET CTGNet RPKI Valid

CIDR

183.91.51.0/24

IP Version

IPv4

Addresses

256

Mask

/24 (255.255.255.0)

Country

🇭🇰 Hong Kong

City

Wanchai

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
183.91.51.0/24	AS23764 CTGNET CTGNet	Valid	APNIC	2026-10-11

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
183.91.48.0/21	AS4809 CHINATELECOM-CORE-WAN-CN2 China Telecom Next Generation Carrier Network	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
183.91.51.0/24	AS4809	/24	apnic
183.91.51.0/24	AS23764	/24	apnic
183.91.48.0/21	AS4809	/21	apnic
183.91.48.0/21	AS23764	/21	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS4809	APNIC	MAINT-CTGL-HK	2020-04-20
AS23764	APNIC	MAINT-CTGL-HK	2021-06-22

Origin ASN

AS23764

CTGNET CTGNet

Related Prefixes

Covering prefix

183.91.48.0/21AS4809

More prefixes of AS23764

All prefixes of AS23764 →

Geolocation

Country🇭🇰Hong KongHK

RegionWan Chai

CityWanchai

Coordinates22.2791, 114.1740 ↗

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/183.91.51.0/24

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

curl -s "https://api.ipctl.io/v1/prefix/183.91.51.0/24" | jq

External Links

RIPEstat