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AS57728

HELIOS MB

Czechia (CZ)

ASN Information

AS NumberAS57728
AS NameCEZNET-AS
OrganizationCEZNET-AS CEZNET s.r.o.
Also known asNot available
CountryCzechia (CZ)
RegistryRIPE NCC
ASN TypeNot available
Last Seen
Announcement Count8
IPv4 Prefix Count5
IPv6 Prefix Count3
RPKI StatusValid ×5Unknown (could not be determined) ×3
IRR RecordsView IRR route objects
WebsiteNot available

AS Path to AS57728

  1. 37271Workonline Communications(Pty) Ltd - Workonline Communications(Pty) Ltd
  2. 29208QUANTCOM-AS Quantcom, a.s.
  3. 39791TPS-AS Telco Pro Services, a. s.
  4. 57728Origin

Most common path, seen 20× in route collector data, latest at a collector in Johannesburg (2026-10-19 23:17:08 UTC). Prepends collapsed.

Route Collectors (Visibility)

Sydney: 11 peer session(s)São Paulo: 16 peer session(s)Johannesburg: 19 peer session(s)Singapore: 22 peer session(s)Amsterdam: 24 peer session(s)London: 31 peer session(s)Eugene, OR: 56 peer session(s)
High (10+ peers)Medium (3–9)Low (1–2)

Approximate route collector locations, coloured by peer sessions carrying this AS's routes.

Announced Prefixes (8)

View All →
PrefixFamilyRPKILast Seen
81.25.16.0/21IPv4ValidNot looked up yet
81.25.24.0/21IPv4ValidNot looked up yet
109.234.40.0/21IPv4ValidNot looked up yet
185.255.116.0/22IPv4ValidNot looked up yet
188.122.192.0/19IPv4ValidNot looked up yet
2a00:1800::/32IPv6Not checkedNot looked up yet
2a00:1807::/32IPv6Not checkedNot looked up yet
2a0a:b6c0::/32IPv6Not checkedNot looked up yet

Peers (1)

View All →
ASNameRelationshipPathsLast Seen
AS39791TPS-AS Telco Pro Services, a. s.Upstream (inferred)895

Neighbours seen next to AS57728 in public AS paths. These are not confirmed BGP sessions; peer IP addresses and locations are not published by these sources.

Public Peering Exchange Points (0)

IX Updates →

No Internet Exchange ports are registered for AS57728.

IX ports registered by AS57728 (self-reported by the network).

Interconnection Facilities (0)

No interconnection facilities are registered for AS57728.

Data centres where AS57728 says it can interconnect (self-reported).

IRR AS-SET and Peering Policy

IRR AS-SETNot available
Member of AS-SETsSee IRR page
Peering policyOpen
Multiple locationsNot Required
Ratio requirementNo
ContractNot Required
TrafficNot available
Traffic ratioNot Disclosed
Geographic scopeNot Disclosed
Max prefixes (IPv4 / IPv6)0 / 0
Unicast / IPv6 / MulticastNo / No / No
Looking glassNot available
Route serverNot available

Contact Information (0)

No public contacts are registered for AS57728.

Only contacts the network has chosen to publish are shown.

Upstreams (1)

ASNameRelationshipPathsLast Seen
AS39791TPS-AS Telco Pro Services, a. s.Upstream (inferred)895

Downstreams (0)

No downstream ASNs found for AS57728 in current data sources.

Registry and network details

Registered holderCEZNET-AS CEZNET s.r.o.
RegisteredYes
Peering policyOpen
IRR AS-setNot available
Registry record last modified
MaintainersRIPE-NCC-END-MNT, CEZNET-MNT
Internet exchanges0
Facilities0
Network profile updated

Data updated . See limitations.