Autonomous system
AS36299 CAPSTONECO-1
Unclassified ARIN
Summary
Capstone Investment Advisors
business finance corporate
CAPSTONECO-1 is operated by Capstone Investment Advisors LLC.
What it's used for
- The address space carries corporate infrastructure for an alternative investment management firm, as indicated by the netnames
CAPSTONE-INTERNETandUK-CAPSTONECO-20250526. - The AS announces 768 IPv4 addresses across 2 prefixes with 3 observed neighbours, a ratio consistent with a small internal corporate estate rather than a transit or access network.
Notable
- Registrants align with the announcer, listing Capstone Investment Advisors LLC for the US block and Capstone Investment Advisors (UK), LLP for the UK block.
- The inventory consists of two distinct IPv4 prefixes: 207.90.246.0/23 and 195.93.154.0/24, with no IPv6 prefixes announced.
- The presence of a UK-specific netname suggests international segmentation of the corporate network.
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 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 768 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS36299- Registry name
- CAPSTONECO-1
- Registrant
- Capstone Investment Advisors LLC
- Abuse contact
- infra2@capstoneco.com
- Registered
- 2017-12-11
- Last changed
- 2017-12-11
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 4 valid, 0 with no ROA
- ROAs
- 4 authorising AS36299
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 4 naming AS36299
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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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