HomeASN LookupAS57728

AS57728

🇨🇿

CEZNET-AS CEZNET s.r.o.ORG-TBS13-RIPE

RIPENCCallocated
Announced Prefixes (BGP)
8total
5 IPv43 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)11,264
Announced (BGP)15,360
IPv6 Addresses ⓘ
Allocated (RIR)1.5×10^29
Announced (BGP)2.3×10^29
Prefix Limit (IPv4)
20
Prefix Limit (IPv6)
10
Country
🇨🇿 CZ
RIR
RIPENCC
Status
allocated
Allocated
10/21/2019

Announced Prefixes

(BGP)8
|
Prefix
RPKI
IRR
Last Seen
81.25.16.0/21
 Valid
RIPE
5/25/2026
81.25.24.0/21
 Valid
RIPE
5/25/2026
109.234.40.0/21
 Valid
RIPE
5/25/2026
185.255.116.0/22
 Valid
RIPE
5/25/2026
188.122.192.0/19
 Valid
RIPE
5/25/2026
2a00:1800::/32
 Valid
RIPE
5/25/2026
2a00:1807::/32
 Valid
RIPE
5/25/2026
2a0a:b6c0::/32
 Valid
RIPE
5/25/2026

Allocated Prefixes

(RIR)5
Prefix
Country
RIR
Status
109.234.40.0/21🇨🇿 CZRIPENCCallocated
185.255.116.0/22🇨🇿 CZRIPENCCallocated
188.122.192.0/19🇨🇿 CZRIPENCCallocated
2a00:1807::/32🇨🇿 CZRIPEassigned
2a0a:b6c0::/32🇨🇿 CZRIPENCCallocated
ASPA
No ASPA
Abuse Contact
+31205354444
External Links
RIPE WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/57728

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/57728" | jq