Data as of Nov 12, 2026
121.
- Proxy activity
- Not seen in 30 days
- Type
- Residential
- Risk
- 0 / 100 · Low
- Announced by
- AS4766Korea Telecomkt.comInternet provider
- Announcement
- 121.128.0.0/13No RPKI
- Location
- Sejong, Sejong-si, South Korea
Network & registry
Announced by
Announcement
- Prefix
- 121.128.0.0/13
- Announced by
- AS4766 Korea Telecom
- Type
- Residential
- Proxy exits
- 3,742
- Always-on exits
- 135
- RPKI
- No RPKI
Origin network
AS4766
KR
- Name
- Korea Telecom
- Type
- Internet provider
- Registered
- Apr 22, 1996
- Domain
- kt.com
- Website
- www.kt.com/eng/main.jsp
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 2
Routing timeline
Who has announced 121.128.0.0/13
121.128.0.0/13
Routing history
- Pattern
- Stable
- First seen
- Dec 2009
- Current origin since
- Dec 2009 · 17 yr
- Origin networks
- 1
Whois
Registration for this address
- Range
- 121.
128. 0. 0/ 11 - Netname
- KORNET-KR
- Registrant
- Korea Telecom
- Registrant country
- KR
- Organization
- Korea Telecom
- Org country
- KR
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Maintainer
- MNT-KRNIC-AP
- RIR
- APNIC
- Country
- KR
- Delegated
- Apr 7, 2006
- Status
- assigned
Report abuse
Abuse contact
- irt@
nic. or. kr - Name
- IRT-KRNIC-KR
- Handle
- IRT-KRNIC-KR
Geolocation
Location detail
- Country
- South Korea
- Region
- Sejong-si
- City
- Sejong
- Coordinates
- 36.
5924, 127. 2922 - Time zone
- Asia/Seoul
- Continent
- Asia
- GeoNames
- 11523293