Autonomous system
AS20723 MGI CZ.MGI autonomous system, Czech Republic
Residential RIPE
Summary
Avonet
residential isp czech cable
The AS handle MGI CZ.MGI is held by Avonet, s.r.o.
What it's used for
- The address space carries residential customer traffic, evidenced by reverse DNS entries such as
cust.avonet.czandgw-xdsl-1-cips-4-cust-3-1.avonet.cz. - With 16,384 IPv4 addresses announced across 7 prefixes and 19 observed neighbours, the ratio indicates an access network providing connectivity to end-users rather than a transit provider.
Notable
- Registrants for the majority of prefixes are listed as
AVONET, s.r.o., aligning with the AS holder, while one prefix (185.111.96.0/22) is registered toNOC Manager; ICT NWT s.r.o.. - The address inventory consists of seven IPv4 blocks ranging from /20 to /22 sizes and a single IPv6 /29 prefix, all located in Czechia.
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
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| NIX.CZ - Neutral Internet eXchange for the Czech Republic | Prague, Czech Republic | 91.210.16.6 |
Transit providers
8 upstream, 1 downstream and 14 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 16.38K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 8 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS20723- Registry name
- MGI
- Registrant
- CZ-MGI-MNT
- Abuse contact
- abuse@avonet.cz
- Registered
- 1970-01-01
- Last changed
- 2025-07-26
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 88% valid · 7 valid, 1 with no ROA
- ROAs
- 8 authorising AS20723
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 13 naming AS20723
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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