HomePrefix Lookup221.133.56.0/21

221.133.56.0/21

🇰🇷
CIDR
221.133.56.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇰🇷 South Korea
City
Yongsan-dong (Nonhyeon-ro 81-gil)
RIR
APNIC
Status
allocated
Allocated
8/3/2006

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
221.133.56.0/21AS9712KPIN-AS-KR-KR - INet Technologies Co., Ltd.No ROA—6/2/2026

Covering Prefix

2 less-specific announcements

More Specific Prefixes

8
PrefixASCountryStatus
221.133.61.0/24AS9712🇰🇷KRassigned
221.133.56.0/24🇰🇷KRassigned
221.133.59.0/24🇰🇷KRassigned
221.133.60.0/24🇰🇷KRassigned
221.133.62.0/24🇰🇷KRassigned
221.133.58.0/24🇰🇷KRassigned
221.133.57.0/24🇰🇷KRassigned
221.133.63.0/24AS9712🇰🇷KRassigned
Geolocation
Country🇰🇷South KoreaKR
RegionSeoul
CityYongsan-dong (Nonhyeon-ro 81-gil)
GEThttps://api.ipctl.io/v1/prefix/221.133.56.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/221.133.56.0/21" | jq