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Data as of Nov 6, 2026

137.59.22.0/23

No anonymizer space · no proxy exits in 30 days

Netsec Limited

Announcement

RPKI valid

Announced by

Type

Hosting

Announcements

More specific

Announcements inside

Prefix	Origin	Type	Holder	RPKI
137.59.22.0/24 since Dec 2015	AS45753	Hosting	Netsec Limited
137.59.23.0/24 since Dec 2015	AS45753	Hosting	Netsec Limited

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Announced by

Covering announcement 137.59.20.0/22

Prefix: 137.59.20.0/22
Announced by: AS45753 Netsec Limited
Type: Hosting
Proxy exits: 4
RPKI: RPKI valid
Netname: NETSEC-HK
Registrant: Netsec Limited
RIR: APNIC

Origin network

AS45753

HK

Name: Netsec Limited
Type: Hosting
Registered: Jun 29, 2011
Domain: simcentric.com
Website: www.simcentric.com/en/
Industry: Hosting and Cloud Provider
Spamhaus ASN-DROP: not listed

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
137.59.20.0/22	AS963	/24	APNIC	Another network
137.59.20.0/22	AS9744	/24	APNIC	Another network
137.59.20.0/22	AS45753	/24	APNIC	RPKI valid

IRR

Route objects on 137.59.20.0/22

Origin	Registry	Description	Maintainer	Modified
AS963 not the origin	APNIC	Netsec Limited	MAINT-NETSEC-HK	Jun 22, 2026
AS9744 not the origin	APNIC	Netsec Limited	MAINT-NETSEC-HK	Nov 29, 2021
AS9744 not the origin	RADB	137.59.20.0/22	MAINT-AS9744	Nov 13, 2023
AS45753	APNIC	Netsec Limited	MAINT-NETSEC-HK	Aug 10, 2021
AS45753	RADB	This is a NetSec Block.	MAINT-AS45753	Nov 13, 2023
AS45753	NTTCOM	CMI IP Transit	MAINT-CMI-INT-HK	Apr 4, 2018