asn.dev

Autonomous system

AS57544 ZFORT-AS

Unclassified RIPE

IPv4 addresses 512 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly UA
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Zfort LLC

Ukraine · AI-generated

business software corporate

The AS handle ZFORT-AS is held by Zfort LLC.

What it's used for

  • The space carries corporate infrastructure, evidenced by the netname ORG-ZL111-RIPE and registrant Zfort LLC; Zfort NOC.
  • The inventory consists of 512 IPv4 addresses within a single prefix (91.232.178.0/23) and 0 IPv6 prefixes.
  • With only 1 observed neighbour, the low address-to-neighbour ratio indicates an internal corporate estate rather than a transit or access network.
  • Traffic from this AS consists of office workers and web/API endpoints for a software development company.

Notable

  • The registrant Zfort LLC agrees with the announcer Zfort LLC.
  • Zfort LLC is a U.S.-registered technology company founded in Kharkiv, Ukraine, in 2000, which expanded into a global operation in 2014.
  • The address inventory is a single contiguous /23 block, typical for a corporate site.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS1820WNET TELECOM USA Corp.61

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
UAUkraine1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS57544
Registry name
ZFORT-AS
Registrant
Zfort LLC
Abuse contact
fediaiev@zfort.com
Registered
2011-11-24
Last changed
2026-02-02
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS57544
ASPA
1 declared providers
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS57544

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 2026-10-20. 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

Cross-check