HomePrefix Lookup37.221.240.0/20

37.221.240.0/20

🇨🇿
IPv4RIPENCCallocatedAS204666czjiritlapak Jiri Tlapak RPKI Valid
CIDR
37.221.240.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇨🇿 Czechia
City
Čáslav (Nové Město)
RIR
RIPENCC
Status
allocated
Allocated
4/10/2012

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
37.221.240.0/20AS204666czjiritlapak Jiri Tlapak Valid
RIPE
5/31/2026

Covering Prefix

10 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
37.221.241.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026
37.221.242.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026
37.221.243.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026
37.221.245.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026
37.221.247.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026
37.221.248.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026
37.221.249.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026
37.221.250.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026
37.221.251.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026
37.221.252.0/24AS204666czjiritlapak Jiri Tlapak Valid—5/31/2026

RPKI ROAs

2
PrefixOriginMax LengthTrust Anchor
37.221.240.0/20AS198668/32ripe
37.221.240.0/20AS204666/24ripe

IRR Route Objects

2
OriginRegistryMaintainerModified
AS198668RIPETLAPNET-MNT7/4/2013
AS204666RIPETLAPNET-MNT4/14/2025

More Specific Prefixes

16
PrefixASCountryStatus
37.221.240.0/22AS198668🇨🇿CZassigned
37.221.246.0/23AS198668🇨🇿CZassigned
37.221.250.0/23AS198668🇨🇿CZassigned
37.221.248.0/23AS198668🇨🇿CZassigned
37.221.252.0/24AS204666🇨🇿CZassigned
37.221.255.0/24AS198668🇨🇿CZassigned
37.221.245.0/24AS204666🇨🇿CZassigned
37.221.254.128/25AS198668🇨🇿CZassigned
37.221.254.0/25AS198668🇨🇿CZassigned
37.221.244.0/25AS198668🇨🇿CZassigned
37.221.244.128/26AS198668🇨🇿CZassigned
37.221.253.0/26AS198668🇨🇿CZassigned
37.221.253.128/26AS198668🇨🇿CZassigned
37.221.253.192/26AS198668🇨🇿CZassigned
37.221.244.192/26AS198668🇨🇿CZassigned
37.221.253.64/26AS198668🇨🇿CZassigned
Origin ASN
AS204666
czjiritlapak Jiri Tlapak
Geolocation
Country🇨🇿CzechiaCZ
RegionCentral Bohemia
CityČáslav (Nové Město)
Coordinates49.9098, 15.3957 ↗
Abuse Contact
API
Open
GEThttps://api.ipctl.io/v1/prefix/37.221.240.0/20

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/37.221.240.0/20" | jq
External Links
RIPEstat Hurricane Electric BGP