Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS133111

Announcement observedAPNIC

CNT-northChina - CERNET New Technology Co., Ltd · CNT-northChina

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/17/2026, 15:24:16Snapshot expired

View network topology RDAP registration

ASN: AS133111
Registration country: China
Name: CNT-northChina - CERNET New Technology Co., Ltd
Abbreviation: CNT-northChina
Registration date: 5/23/2019, 12:55:25
Status: Announcement observed
RIR: APNIC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
103.81.200.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/17/2026, 08:00:00	✓	×	Currently valid
42.201.32.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/17/2026, 08:00:00	✓	×	Currently valid
42.201.33.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/17/2026, 08:00:00	✓	×	Currently valid
42.201.60.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/17/2026, 08:00:00	✓	×	Currently valid
42.201.62.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/17/2026, 08:00:00	✓	×	Currently valid
42.245.192.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/17/2026, 08:00:00	✓	×	Currently valid
42.245.221.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/17/2026, 08:00:00	✓	×	Currently valid
43.252.48.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	10/17/2026, 08:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: CNT-northChina - CERNET New Technology Co., Ltd
RIR: APNIC
Registration country: China
Registration date: 5/23/2019, 12:55:25
Abuse contact: yujj@cernet.com

Snapshot trend

10/17/2026, 15:24:168 v43 v63 Upstream · 0 Uncertain

10/16/2026, 11:27:218 v43 v63 Upstream · 0 Uncertain

10/5/2026, 06:50:338 v43 v63 Upstream · 0 Uncertain

10/5/2026, 06:48:240 v40 v60 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · rir-rdap-asn · iana-rdap-asn-bootstrap