Autonomous system profile

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

AS21874

Announcement observedARIN

MMC - MMC · MMC

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

Last active10/1/2026, 08:33:43Snapshot expired

View network topology RDAP registration

ASN: AS21874
Registration country: United States
Name: MMC - MMC
Abbreviation: MMC
Registration date: 7/3/2001, 04:00:00
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
205.156.183.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 00:00:00	10/1/2026, 00:00:00	✓	×	Currently valid
205.156.184.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 00:00:00	10/1/2026, 00:00:00	✓	×	Currently valid

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

Registration and sources

Organization: MMC - MMC
RIR: ARIN
Registration country: United States
Registration date: 7/3/2001, 04:00:00
Abuse contact: abuse@mmc.com

Snapshot trend

10/1/2026, 08:33:432 v40 v62 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