asn.dev

Autonomous system

AS57496 PRAHA1NET-AS

Unclassified ARIN

IPv4 addresses 4.10K 1 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Praha1.net

Czechia · AI-generated

business czechia metro

PRAHA1NET-AS is held by Praha1.net z.s.p.o.

What it's used for

  • The space carries corporate and municipal network traffic, identified by the netname CZ-PRAHA1NET and registrant Praha1.net z.s.p.o.
  • The AS announces 4096 IPv4 addresses and 2 IPv6 prefixes with only 2 observed neighbours, indicating a local access or internal corporate estate rather than a transit provider
  • Traffic consists of internal communications for the association of legal persons representing the Prague 1 district, supporting municipal services and local infrastructure

Notable

  • The RDAP registrant Praha1.net z.s.p.o. matches the AS holder, confirming consistent ownership of the address space
  • The address inventory consists of a single contiguous IPv4 block (176.101.144.0/20) and two IPv6 prefixes, reflecting a compact and self-contained network design

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

2 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS25248RADIOKOMUNIKACE a.s.85
AS29208Quantcom, a.s.47

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, 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 · 4.10K addresses IPv6 2 prefixes

CountryNamePrefixes
CZCzechia3

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS57496
Registry name
PRAHA1NET-AS
Registrant
Praha1.net z.s.p.o.
Abuse contact
tech@praha1.net
Registered
2011-11-14
Last changed
2023-12-29
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS57496
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS57496

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 1,779 prefixes, as published 2026-10-22. 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