Autonomous system profile

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

AS137719

Announcement observedAPNIC

CERWD - Qingdao Weidong Big Data Technology Co., Ltd · CERWD

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

Last active10/5/2026, 18:09:30Snapshot expired

View network topology RDAP registration

ASN: AS137719
Registration country: China
Name: CERWD - Qingdao Weidong Big Data Technology Co., Ltd
Abbreviation: CERWD
Registration date: 7/18/2018, 03:25:41
Status: Announcement observed
RIR: APNIC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
103.154.162.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	10/11/2026, 00:00:00	✓	×	Currently valid

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

Registration and sources

Organization: CERWD - Qingdao Weidong Big Data Technology Co., Ltd
RIR: APNIC
Registration country: China
Registration date: 7/18/2018, 03:25:41
Abuse contact: yukun@wdjt.cc

Snapshot trend

10/5/2026, 18:09:301 v40 v61 Upstream · 0 Uncertain

10/5/2026, 09:55:270 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