Autonomous system
AS3073 CITI7
Unclassified ARIN
Summary
Citigroup Inc.
enterprise legacy
CITI7 is one of a set of autonomous systems operated by Citigroup, the global banking and financial services company.
What it's used for
- Citigroup's own corporate and banking network: internal systems, branch and office connectivity, and the bank's internet-facing services.
- The announced space includes Latin American ranges alongside the bank's legacy US blocks, reflecting Citi's international footprint.
Notable
- This is enterprise address space, not consumer or hosting space. IPs here belong to a bank's own infrastructure, so they are a poor fit for assumptions about end-user or server-tenant traffic.
- ARIN's registration dates to 1993. Large banks were early adopters of their own routed address space, and Citi's numbering scheme runs across several sibling ASNs including AS3081.
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 2026-10-16, 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 · 1.28K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 4 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS3073- Registry name
- CITI7
- Registrant
- Citigroup Inc.
- Abuse contact
- domain.admin@citi.com
- Registered
- 1993-11-04
- Last changed
- 2023-07-10
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 5 with no ROA
- ROAs
- 0 authorising AS3073
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 5 naming AS3073
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