Autonomous system
AS10444 ZB NATIONAL ASSOCIATION
Unclassified APNIC
Summary
Zions Bancorporation (ZB, N.A.)
business enterprise finance bank
Registered to ZB, National Association — the former name of Zions Bancorporation, N.A., a national commercial bank headquartered in Salt Lake City, Utah. The bank renamed itself in 2018 after merging its holding company into the operating bank, and the registry handle simply never caught up.
What it's used for
- The bank's own internet-facing edge: online and business banking, remote access for branches and staff, and the public services of its regional trade-name divisions (Zions Bank, Amegy, California Bank & Trust, National Bank of Arizona, Nevada State Bank, Vectra).
Notable
- Enterprise/financial end-site, not a provider. RIS sees 27 IPv4 prefixes but only about 8,192 addresses in total, with 5 observed BGP neighbours. A small address pool announced through a few upstreams, with nobody downstream, is the multihomed-enterprise signature. Banks multihome aggressively because availability is a regulatory as much as a commercial concern.
- The prefix list is the interesting part: every announcement falls inside
209.20.96.0/19, and the AS advertises it as two /20s plus two dozen individual /24s carved out of the same space. Deaggregating your own block that finely is deliberate — it lets an operator steer specific services down specific upstreams and makes prefix hijacks harder to land, since a /24 cannot be out-specified in the global table. - A high prefix count with a tiny address count means traffic engineering, not scale. Reading the 27 prefixes as a large network would be exactly backwards.
Interesting
- This is a good example of why a registry handle is never proof of identity:
ZB NATIONAL ASSOCIATIONnames an entity that has not used that name in years.
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 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 9 prefixes · 8.19K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 9 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS10444- Registry name
- ZB NATIONAL ASSOCIATION
- Registrant
- ZB, National Association
- Abuse contact
- ip-administrator@zionsbancorp.com
- Registered
- 1997-08-05
- Last changed
- 2018-01-25
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 27 with no ROA
- ROAs
- 0 authorising AS10444
- ASPA
- no ASPA record
- IRR
- 100% registered · 27 of 27 announcements
- Route objects
- 2 naming AS10444
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 1,772 prefixes, as published 2026-10-15. 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