AS21549 — IRON-MOUNTAIN

AS21549 announces 11 IPv4 prefixes covering 5,120 addresses and 0 IPv6 prefixes.

About this network

The AS handle IRON-MOUNTAIN is operated by Iron Mountain Inc.

What it's used for

• The address space carries corporate network services, as indicated by netnames such as IRONMOUNTAIN-216-229-144-0 and IRONMOUNTAIN-208-66-136-0 associated with the registrant "Iron Mountain Inc; Network Services".
• With 5120 IPv4 addresses announced across 11 prefixes and only 5 observed neighbours, the inventory reflects an internal corporate estate rather than a transit or access network, consistent with Iron Mountain's role as a records management and information services provider.

Notable

• All registrants in the RDAP data align with the announcer, listing variations of "Iron Mountain Inc" or "Iron Mountain Inc. -Corp US-" for every prefix.
• The address inventory is finely subdivided into multiple /22, /23, and /24 blocks, suggesting site-by-site segmentation typical of a large enterprise with distributed facilities.
• No IPv6 prefixes are announced in the inventory.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 138.207.75.0/24
• 138.207.76.0/23
• 138.207.79.0/24
• 170.62.38.0/24
• 170.62.126.0/24
• 208.66.139.0/24
• 208.66.142.0/23
• 216.229.144.0/22
• 216.229.152.0/23
• 216.229.154.0/24
• 216.229.156.0/22

Upstream networks

• AS12025 Iron Mountain Data Center
• AS3356 Level 3 Parent, LLC
• AS7018 AT&T Enterprises, LLC
• AS7922 Comcast Cable Communications, LLC
• AS33650 Comcast Cable Communications, LLC

Adjacent networks

• AS12025 Iron Mountain Data Center
• AS3356 Level 3 Parent, LLC
• AS7018 AT&T Enterprises, LLC
• AS7922 Comcast Cable Communications, LLC
• AS33650 Comcast Cable Communications, LLC

Routing security

• RPKI: 4 valid, 0 invalid and 13 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 65% of announcements registered; 28 route objects.
• Listed in as-sets: AS-COMCAST-EDIA, AS-DEFENSE, AS-IMDC, AS-PNAPBOS, AS-PNAPBSN, AS-TRANSROUTE-SPEC, AS12025:AS-CUSTOMERS, AS35280:AS-DEFENSE.