asn.dev

Autonomous system

AS200391 KREZ999AS

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly BG
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

KREZ 999 EOOD

Bulgaria · AI-generated

bulgaria small ipv4

The AS handle KREZ999AS is held by KREZ 999 EOOD.

What it's used for

  • The address space carries a single IPv4 prefix, 5.188.206.0/24, with the netname TAIL-NET and registrant Technology Advanced Investment Limited.
  • The AS announces 256 IPv4 addresses across 1 prefix and has 1 observed neighbour, indicating a small, self-contained network with minimal peering.
  • No IPv6 prefixes are announced, and the inventory is limited to a single /24 block in Bulgaria.

Notable

  • The RDAP registrant for the announced prefix is Technology Advanced Investment Limited, which differs from the AS holder KREZ 999 EOOD.
  • The address inventory consists of a single contiguous /24 block, with no other prefixes in the inventory.

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
AS50360Tamatiya EOOD62

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, 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 · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
BGBulgaria1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS200391
Registry name
KREZ999AS
Registrant
MNT-LIR-BG
Abuse contact
abuse@fasthost.ltd
Registered
2018-07-26
Last changed
2020-11-16
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS200391
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS200391

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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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