asn.dev

Autonomous system

AS57943 IZZYCOM-AS

Unclassified RIPE

IPv4 addresses 5.12K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly FR
Exchanges 1 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Izzycom

France · AI-generated

isp residential france broadband

The AS handle IZZYCOM-AS is held by Holon SAS.

What it's used for

  • The address space carries residential broadband traffic, evidenced by reverse DNS records pointing to rev.izzycom.net (e.g., 255.131.157.37.rev.izzycom.net).
  • The network announces 5120 IPv4 addresses across 3 prefixes with only 2 observed neighbours, a ratio characteristic of an access or eyeball network rather than a transit provider.
  • Traffic from this AS consists of subscriber internet access for the Izzycom brand, which operates as a regional ISP in France.

Notable

  • All registrants for the announced prefixes are listed as Holon SAS, consistent with the AS holder.
  • The address inventory is composed of three distinct IPv4 blocks: 37.157.128.0/21, 178.250.104.0/21, and 185.225.184.0/22.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
BreizhIXRennes, France185.1.89.19

Transit providers

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS30781Free Pro SAS120
AS31167AXIONE S.A.S.63

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

Shape and geography

IPv4 3 prefixes · 5.12K addresses IPv6 0 prefixes

CountryNamePrefixes
FRFrance3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS57943
Registry name
HOLON-AS
Registrant
IZZY-MNT
Abuse contact
abuse@odena.net
Registered
2012-03-16
Last changed
2026-03-13
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS57943
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS57943

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 1,773 prefixes, as published 2026-10-13. 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