Home Prefix Lookup203.20.51.0/24

203.20.51.0/24 - CTGNET (AS23764)

IPv4APNICallocatedAS23764CTGNET CTGNet RPKI Valid

CIDR

203.20.51.0/24

IP Version

IPv4

Addresses

256

Mask

/24 (255.255.255.0)

Country

🇭🇰 Hong Kong

City

Wan Chai

RIR

APNIC

Status

allocated

Allocated

2007-05-21

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
203.20.51.0/24	AS23764 CTGNET CTGNet	Valid	APNIC	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
203.20.51.0/24	AS23764	/24	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS23764	APNIC	MAINT-CTHKI-HK	2025-01-20

Transfer History

Registry transfers of 203.20.51.0/24, blocks inside it, or blocks containing it.

203.20.51.0/24Transfer · 2025-01-15
Hyland-Wood Services
🇦🇺 AU APNIC
→
China Telecom Global Limited
🇭🇰 HK APNIC

Date	Resource	From	To	Type
2025-01-15	203.20.51.0/24	Hyland-Wood Services 🇦🇺 AU APNIC	China Telecom Global Limited 🇭🇰 HK APNIC	Transfer

Origin ASN

AS23764

CTGNET CTGNet

Related Prefixes

More prefixes of AS23764

All prefixes of AS23764 →

Geolocation

Country🇭🇰Hong KongHK

RegionWan Chai

CityWan Chai

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/203.20.51.0/24

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

curl -s "https://api.ipctl.io/v1/prefix/203.20.51.0/24" | jq

External Links

RIPEstat