Autonomous system
AS27390 ALGAS
Unclassified ARIN
Summary
Fred Alger & Co
business finance corporate
The AS handle ALGAS is held by Fred Alger & Co.
What it's used for
- The address space carries corporate infrastructure for a financial services firm, evidenced by the registrant
Fred Alger & Coand reverse DNS entries pointing tooainc.net. - The AS announces 512 IPv4 addresses across 2 prefixes with 3 observed neighbours, indicating a small-scale internal corporate estate rather than a transit or access network.
Notable
- Registrants do not fully agree with the announcer; one prefix is registered to
Cogent Communications, LLCwhile the other is registered toFred Alger & Co. - The address inventory consists of two /24 blocks, one of which appears to be leased or historically associated with Cogent, while the other is directly owned by the financial firm.
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 2026-10-17, 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 · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS27390- Registry name
- ALGAS
- Registrant
- Fred Alger & Co Inc.
- Abuse contact
- zstaniek@alger.com
- Registered
- 2003-02-25
- Last changed
- 2003-02-25
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS27390
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 6 naming AS27390
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 1,783 prefixes, as published 2026-10-17. 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