Home Prefix Lookup203.91.72.0/21

203.91.72.0/21 - BGP Prefix

IPv4APNICallocated RPKI Valid

CIDR

203.91.72.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇭🇰 Hong Kong

City

Mong Kok

RIR

APNIC

Status

allocated

Allocated

1998-11-09

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below.

More-Specific Announcements

8 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
203.91.72.0/24	AS400619 AROSS-AS - AROSSCLOUD INC.	Valid	-	2026-10-12
203.91.73.0/24	AS400619 AROSS-AS - AROSSCLOUD INC.	Valid	-	2026-10-12
203.91.74.0/24	AS400619 AROSS-AS - AROSSCLOUD INC.	Valid	-	2026-10-12
203.91.75.0/24	AS400619 AROSS-AS - AROSSCLOUD INC.	Valid	-	2026-10-12
203.91.76.0/24	AS400619 AROSS-AS - AROSSCLOUD INC.	Valid	-	2026-10-12
203.91.77.0/24	AS400619 AROSS-AS - AROSSCLOUD INC.	Valid	-	2026-10-12
203.91.78.0/24	AS400619 AROSS-AS - AROSSCLOUD INC.	Valid	-	2026-10-12
203.91.79.0/24	AS400619 AROSS-AS - AROSSCLOUD INC.	Valid	-	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
203.91.72.0/21	AS400619	/24	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS55020	APNIC	MAINT-LIHGL-HK	2023-10-23
AS400619	APNIC	MAINT-LIHGL-HK	2026-05-23
AS400619	Other IRR	MAINT-AS400619	2025-11-04

Transfer History

Registry transfers of 203.91.72.0/21, blocks inside it, or blocks containing it.

203.91.72.0/21Transfer · 2020-10-08
VOCUS PTY LTD
🇦🇺 AU APNIC
→
LANLIAN INTERNATIONAL HOLDING GROUP LIMITED
🇭🇰 HK APNIC

Date	Resource	From	To	Type
2020-10-08	203.91.72.0/21	VOCUS PTY LTD 🇦🇺 AU APNIC	LANLIAN INTERNATIONAL HOLDING GROUP LIMITED 🇭🇰 HK APNIC	Transfer

Geolocation

Country🇭🇰Hong KongHK

RegionYau Tsim Mong District

CityMong Kok

Coordinates22.3146, 114.1700 ↗

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/203.91.72.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/203.91.72.0/21" | jq

External Links

RIPEstat