Data as of Nov 9, 2026
121.138.156.0/24
No anonymizer space · no proxy exits in 30 daysItcenentec CO.,LTD. · space held by Korea Telecom
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 121.136.0.0/13 since Dec 2009 | AS4766 | Residential | 3,650 176 always on | Korea Telecom | |
| 121.128.0.0/12 since Sep 2009 | AS4766 | Residential | 7,178 348 always on | Korea Telecom | |
| 121.128.0.0/11 since Apr 2006 | AS4766 | Residential | 14,233 635 always on | Korea Telecom |
Network & registry
Origin network
AS9273
KR
- Name
- Itcenentec CO.,LTD.
- Type
- Business
- Registered
- Jan 22, 1998
- Domain
- itcen.com
- Industry
- Automotive and Transportation
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 2024
- Current origin since
- Oct 2024 · 2.1 yr
- 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