Data as of Nov 4, 2026
203.253.136.0/22
No anonymizer space · no proxy exits in 30 daysKISTI
Network & registry
Origin network
AS1237
KR
- Name
- KISTI
- Type
- Education
- Registered
- Aug 1, 2002
- Domain
- kreonet.net
- Website
- kreonet.net
- Industry
- Banks, Credit Card Companies, Mortgage Providers
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 203.253.136.0/22 | AS1237 | /24 | APNIC | RPKI valid |
| 203.253.136.0/21 | AS1237 | /21 | APNIC | Too specific |
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 203.253.136.0/23 | AS1237 | APNIC | Korea Internet & Security Agency (KISA) | MNT-KRNIC-AP | Sep 8, 2025 |
| 203.253.136.0/24 | AS1237 | APNIC | Korea Internet & Security Agency (KISA) | MNT-KRNIC-AP | Sep 8, 2025 |
| 203.253.137.0/24 | AS1237 | APNIC | Korea Internet & Security Agency (KISA) | MNT-KRNIC-AP | Sep 8, 2025 |
| 203.253.138.0/23 | AS1237 | APNIC | Korea Internet & Security Agency (KISA) | MNT-KRNIC-AP | Sep 8, 2025 |
| 203.253.138.0/24 | AS1237 | APNIC | Korea Internet & Security Agency (KISA) | MNT-KRNIC-AP | Sep 8, 2025 |
| 203.253.139.0/24 | AS1237 | APNIC | Korea Internet & Security Agency (KISA) | MNT-KRNIC-AP | Sep 8, 2025 |
Whois
Registration for this announcement
- Range
- 203.253.136.0/21
- Netname
- KREONet-KR
- Registrant
- KISTI
- Registrant country
- KR
- Organization
- KISTI
- Org country
- KR
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Maintainer
- MNT-KRNIC-AP
- RIR
- APNIC
- Country
- KR
- Delegated
- Sep 29, 1996
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- IRT-KRNIC-KR
- Handle
- IRT-KRNIC-KR