Home Prefix Lookup172.81.100.0/23

172.81.100.0/23 - HKCICL AP Hong Kong Communications International ., Limited (AS140227)

IPv4ARINannouncedAS140227HKCICL-AS-AP Hong Kong Communications International Co., Limited RPKI Valid

CIDR

172.81.100.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇭🇰 Hong Kong

City

Hong Kong

RIR

ARIN

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
172.81.100.0/23	AS140227 HKCICL-AS-AP Hong Kong Communications International Co., Limited	Valid	ARINOther IRR	2026-10-11

More-Specific Announcements

2 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
172.81.100.0/24	AS140227 HKCICL-AS-AP Hong Kong Communications International Co., Limited	Valid	-	2026-10-11
172.81.101.0/24	AS140227 HKCICL-AS-AP Hong Kong Communications International Co., Limited	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
172.81.100.0/23	AS8796	/24	arin
172.81.100.0/23	AS40115	/24	arin
172.81.100.0/23	AS137535	/24	arin
172.81.100.0/23	AS140224	/24	arin
172.81.100.0/23	AS140227	/24	arin
172.81.96.0/20	AS8796	/20	arin
172.81.96.0/20	AS140227	/20	arin
172.81.96.0/20	AS153517	/24	arin
172.81.96.0/20	AS395886	/20	arin
172.81.96.0/20	AS400618	/24	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS140227	ARIN	MNT-PSC-594	2026-06-30
AS137535	ARIN	MNT-PSC-594	2026-03-25
AS140224	ARIN	MNT-PSC-594	2026-06-30
AS8796	ARIN	MNT-PSC-594	2025-10-23
AS40115	ARIN	MNT-PSC-594	2026-03-25
AS153517	Other IRR	MAINT-AS140227	2026-04-29
AS8796	Other IRR	MAINT-AS140227	2025-10-23
AS140224	Other IRR	MAINT-AS140227	2023-11-13
AS140227	Other IRR	MAINT-AS140227	2023-11-13

Transfer History

Registry transfers of 172.81.100.0/23, blocks inside it, or blocks containing it.

172.81.96.0/20Transfer · 2023-09-05
KLAYER LLC
🇺🇸 US ARIN
→
Prime Security Corp.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2023-09-05	172.81.96.0/20	KLAYER LLC 🇺🇸 US ARIN	Prime Security Corp. 🇺🇸 US ARIN	Transfer

Origin ASN

AS140227

HKCICL-AS-AP Hong Kong Communications International Co., Limited

Related Prefixes

More prefixes of AS140227

All prefixes of AS140227 →

Geolocation

Country🇭🇰Hong KongHK

CityHong Kong

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 ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/172.81.100.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/172.81.100.0/23" | jq

External Links

RIPEstat