Data as of Nov 9, 2026
221.158.73.0/24
No anonymizer space · no proxy exits in 30 daysNational Research Foundation of Korea · space held by Korea Telecom
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 221.152.0.0/13 since Dec 2009 | AS4766 | Residential | 3,585 155 always on | Korea Telecom | |
| 221.144.0.0/12 since May 2005 | AS4766 | Residential | 6,557 285 always on | Korea Telecom |
Network & registry
Origin network
AS17576
KR
- Name
- National Research Foundation of Korea
- Type
- Business
- Registered
- Jan 17, 2001
- Domain
- nrf.re.kr
- Industry
- Community Groups and Nonprofits
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS17576 | RADB | KOREALIFE-AS-KR | MAINT-AS3786 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 221.
144. 0. 0/ 12 - 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 17, 2003
- Status
- assigned
Report abuse
Abuse contact
- irt@
nic. or. kr - Name
- IRT-KRNIC-KR
- Handle
- IRT-KRNIC-KR