Home Prefix Lookup52.128.224.0/21

52.128.224.0/21 - NETSEC HK Netsec Limited (AS45753)

IPv4APNICannouncedAS45753NETSEC-HK Netsec Limited RPKI Invalid

CIDR

52.128.224.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇭🇰 Hong Kong

City

Hong Kong

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
52.128.224.0/21	AS45753 NETSEC-HK Netsec Limited	Invalid	-	2026-10-11

Related Announcements

2 less-specific, 8 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
52.128.224.0/19	AS963 N963-AS-AP N963 PTE. LTD.	Valid	-	2026-10-11
52.128.224.0/19	AS45753 NETSEC-HK Netsec Limited	Valid	-	2026-10-11
52.128.224.0/24	AS45753 NETSEC-HK Netsec Limited	Valid	-	2026-10-11
52.128.225.0/24	AS45753 NETSEC-HK Netsec Limited	Valid	-	2026-10-11
52.128.226.0/24	AS45753 NETSEC-HK Netsec Limited	Valid	-	2026-10-11
52.128.227.0/24	AS45753 NETSEC-HK Netsec Limited	Valid	-	2026-10-11
52.128.228.0/24	AS45753 NETSEC-HK Netsec Limited	Valid	-	2026-10-11
52.128.229.0/24	AS45753 NETSEC-HK Netsec Limited	Valid	-	2026-10-11
52.128.230.0/24	AS45753 NETSEC-HK Netsec Limited	Valid	-	2026-10-11
52.128.231.0/24	AS45753 NETSEC-HK Netsec Limited	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
52.128.224.0/19	AS963	/24	apnic
52.128.224.0/19	AS9744	/24	apnic
52.128.224.0/19	AS45753	/19	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS9744	APNIC	MAINT-NETSEC-HK	2021-11-29
AS963	APNIC	MAINT-NETSEC-HK	2026-06-22

Transfer History

Registry transfers of 52.128.224.0/21, blocks inside it, or blocks containing it.

52.128.224.0/19Transfer · 2021-11-29
Simcentric Solutions Limited.
🇭🇰 HK APNIC
→
Netsec Limited
🇭🇰 HK APNIC
52.128.224.0/19inter-RIRTransfer · 2017-10-03
E.I. du Pont de Nemours and Co., Inc.
🇺🇸 US ARIN
→
Simcentric Solutions Limited
🇭🇰 HK APNIC

Date	Resource	From	To	Type
2021-11-29	52.128.224.0/19	Simcentric Solutions Limited. 🇭🇰 HK APNIC	Netsec Limited 🇭🇰 HK APNIC	Transfer
2017-10-03	52.128.224.0/19inter-RIR	E.I. du Pont de Nemours and Co., Inc. 🇺🇸 US ARIN	Simcentric Solutions Limited 🇭🇰 HK APNIC	Transfer

Origin ASN

AS45753

NETSEC-HK Netsec Limited

Related Prefixes

Covering prefix

52.128.224.0/19AS963

More prefixes of AS45753

All prefixes of AS45753 →

Geolocation

Country🇭🇰Hong KongHK

RegionKowloon

CityHong Kong

Coordinates22.3193, 114.1690 ↗

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/52.128.224.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/52.128.224.0/21" | jq

External Links

RIPEstat