Autonomous system
AS27313 SPENCER-STUART
Unclassified ARIN
Summary
Spencer Stuart
business corporate executive-search
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-1andSSI-ARIN-AWS-01-EU-WEST-1, alongside generic identifiers likeSPENCER-STUART1andSPENCER-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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 1.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 4 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS27313- Registry name
- SPENCER-STUART
- Registrant
- Spencer Stuart
- Abuse contact
- amancuso@spencerstuart.com
- Registered
- 2008-05-12
- Last changed
- 2026-10-05
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 50% valid · 2 valid, 2 with no ROA
- ROAs
- 3 authorising AS27313
- ASPA
- no ASPA record
- IRR
- 75% registered · 3 of 4 announcements
- Route objects
- 6 naming AS27313
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,782 prefixes, as published 2026-10-16. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere