Autonomous system profile

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

AS398856

Announcement unconfirmedARIN

Group M Worldwide, LLC · WPP-DETROIT

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

Last active11/2/2026, 06:40:19Snapshot expired

View network topology RDAP registration

ASN: AS398856
Registration country: United States
Name: Group M Worldwide, LLC
Abbreviation: WPP-DETROIT
Registration date: 10/1/2020, 15:50:01
Status: Announcement unconfirmed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	ASN registration country	Observation window start	Latest observation	IPv4	IPv6	Status

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Relationships are observed AS_PATH adjacencies. Coverage is partial; direction does not establish a commercial relationship.

Registration and sources

Organization: Group M Worldwide, LLC
RIR: ARIN
Registration country: United States
Registration date: 10/1/2020, 15:50:01
Abuse contact: RIR.Technical.Contact@wpp.com

Snapshot trend

11/2/2026, 06:40:190 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: iana-rdap-asn-bootstrap · rir-rdap-asn