asn.dev

Autonomous system

AS35654 CORESNET

Unclassified RIPE Cable/DSL/ISP

IPv4 addresses 2.56K 8 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

Cores Networks

Bulgaria · AI-generated

isp residential cable dsl

The AS handle CORESNET is held by Cores Networks EOOD.

What it's used for

  • The address space carries residential and business access traffic, evidenced by reverse DNS records pointing to coresnet.bg and netnames like BG-CORES1-20010611.
  • With 2560 IPv4 addresses announced across 8 prefixes and only 1 observed neighbour, the network operates as an access provider rather than a transit hub.

Notable

  • All registrants in the RDAP data align with the announcer, consistently listing Cores-net and Cores Networks EOOD.
  • The address inventory consists of eight IPv4 blocks within the 80.72.0.0/16 range, with no IPv6 prefixes currently announced.

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
AS57344Telehouse EAD610

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, 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 8 prefixes · 2.56K addresses IPv6 0 prefixes

CountryNamePrefixes
BGBulgaria8

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS35654
Registry name
CoresNET
Registrant
CORES-MNT
Abuse contact
admin@coresnet.bg
Registered
2005-09-27
Last changed
2021-03-15
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
Cores Networks
Network type
Cable/DSL/ISP
Scope
Regional
Traffic ratio
Mostly Inbound
Peering policy
Open
IRR as-set
AS-CORES
Present at
1 exchanges
Facilities
1 facilities

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 10 valid, 0 with no ROA
ROAs
9 authorising AS35654
ASPA
no ASPA record
IRR
100% registered · 10 of 10 announcements
Route objects
11 naming AS35654

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 1,784 prefixes, as published 2026-10-19. 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