asn.dev

Autonomous system

AS204391 NBESTIHOSTING

Unclassified DROP-listed space RIPE

IPv4 addresses 1.79K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly LV
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

NBI SIA

Latvia · AI-generated

hosting smtp latvia

The AS handle NBESTIHOSTING is held by NBI SIA.

What it's used for

  • The address space carries SMTP mail infrastructure, evidenced by reverse DNS entries such as pr-ist-mta-254.expresssmtp.com and multiple pr--mta.testmailscore.top records.
  • The network announces 1792 IPv4 addresses across 3 prefixes with only 1 observed neighbour, indicating a small, isolated hosting or service provider rather than a transit or access network.
  • Traffic from this AS consists of outbound and inbound email traffic, specifically mail transfer agents (MTAs) associated with the domains expresssmtp.com and testmailscore.top.

Notable

  • Registrants for the largest prefixes are consistent with the announcer, listing NBI SIA for 45.95.80.0/22 and 185.250.118.0/23, while 185.250.116.0/24 lists Abuse-C Role.
  • The inventory is composed of three distinct IPv4 blocks: 45.95.80.0/22, 185.250.118.0/23, and 185.250.116.0/24, all located in Latvia.

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
AS58269CloudHosting SIA413

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, 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 3 prefixes · 1.79K addresses IPv6 0 prefixes

CountryNamePrefixes
LVLatvia3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS204391
Registry name
nbestihosting
Registrant
lv-nb-1-mnt
Abuse contact
abuse@nbi.lv
Registered
2018-03-20
Last changed
2020-06-08
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 7 with no ROA
ROAs
0 authorising AS204391
ASPA
no ASPA record
IRR
100% registered · 7 of 7 announcements
Route objects
8 naming AS204391

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.

1 DROP match Announced space overlapping the DROP prefix list.

AnnouncedDROP entryRecord
45.95.80.0/2245.95.82.0/24SBL692989

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,852 prefixes, as published 2026-10-27. 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