Data as of Nov 5, 2026
121.147.42.0/25
No anonymizer space · no proxy exits in 30 daysKorea Internet Security Agency · space held by Korea Telecom
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 121.144.0.0/13 since Dec 2009 | AS4766 | Residential | 3,225 137 always on | Korea Telecom | |
| 121.144.0.0/12 since Sep 2009 | AS4766 | Residential | 6,262 292 always on | Korea Telecom | |
| 121.128.0.0/11 since Apr 2006 | AS4766 | Residential | 12,939 630 always on | Korea Telecom |
Network & registry
Origin network
AS45986
KR
- Name
- Korea Internet Security Agency
- Type
- Business
- Registered
- Nov 10, 2009
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- First seen
- Before our records
- Origin networks
- 1
Whois
Registration for this announcement
- 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