AS27313 — SPENCER-STUART

AS27313 announces 4 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

The AS handle SPENCER-STUART is operated by Spencer Stuart.

What it's used for

• The address space carries corporate infrastructure, with netnames explicitly referencing AWS regions such as SSI-ARIN-AWS-01-US-EAST-1 and SSI-ARIN-AWS-01-EU-WEST-1, alongside generic identifiers like SPENCER-STUART1 and SPENCER-STUART3.
• The inventory consists of 4 IPv4 prefixes totaling 1024 addresses, with 0 IPv6 prefixes announced. With only 4 observed neighbours, the low ratio of address space to peering partners indicates a small, internal corporate estate rather than a transit or access network.

Notable

• All four registrants in the RDAP data are listed as Spencer Stuart, fully agreeing with the AS holder.
• The address inventory is finely subdivided into four /24 blocks, a pattern consistent with site-by-site segmentation or specific cloud region allocations for a single enterprise.

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

Announced prefixes

• 204.79.137.0/24
• 204.79.138.0/24
• 204.79.140.0/24
• 204.79.172.0/24

Upstream networks

• AS174 Cogent Communications, LLC
• AS16509 Amazon.com, Inc.
• AS14618 Amazon.com, Inc.

Adjacent networks

• AS174 Cogent Communications, LLC
• AS16509 Amazon.com, Inc.
• AS14618 Amazon.com, Inc.

Routing security

• RPKI: 2 valid, 0 invalid and 2 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 75% of announcements registered; 6 route objects.
• Listed in as-sets: AS-GLOBEINTERNET-CLIENTS, AS-GLOBEINTERNET-CLIENTS, AS-SASEUCUST, AS16509:AS-AMAZON-BYO-AP-SOUTHEAST-1, AS16509:AS-AMAZON-BYO-EU-WEST-1, AS16509:AS-AMAZON-BYO-US-EAST-1, AS273103:AS-TVYMAS, AS8218:AS-AMSIX-RS, AS8220:AS-COLTIE.