Data as of Nov 8, 2026
203.231.224.0/20
No anonymizer space · no proxy exits in 30 daysSejong Networks
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 203.231.0.0/16 since May 2005 | AS9848 | Internet provider | 27 | Sejong Networks |
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 203.231.224.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.225.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.226.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.227.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.228.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.229.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.230.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.231.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.232.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.233.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.234.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.235.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.236.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.237.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.238.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks | |
| 203.231.239.0/24 since Jul 2024 | AS17881 | Hosting | Sejong Networks |
Network & registry
Announced by
Covering announcement 203.231.224.0/19
- Prefix
- 203.231.224.0/19
- Announced by
- AS9848 Sejong Networks
- Type
- Internet provider
- Proxy exits
- 14
- RPKI
- No RPKI
- Netname
- SEJONG-KR
- Registrant
- Sejong Networks
- RIR
- APNIC
Origin network
AS9848
KR
- Name
- Sejong Networks
- Type
- Internet provider
- Registered
- Feb 4, 2000
- Domain
- sejongnetworks.com
- Website
- en.sejongnetworks.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
203.231.224.0/19
Routing history
- Pattern
- Stable
- First seen
- Dec 2024
- Current origin since
- Dec 2024 · 1.9 yr
- Origin networks
- 1
IRR
Route objects on 203.231.224.0/19
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS9848 | RADB | SejongTelecom.co.ltd | MAINT-AS4670 | Nov 11, 2025 |
Whois
Registration for this announcement
- Range
- 203.
231. 0. 0/ 16 - Netname
- SEJONG-KR
- Registrant
- Sejong Networks
- Registrant country
- KR
- Organization
- Sejong Networks
- Org country
- KR
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Maintainer
- MNT-KRNIC-AP
- RIR
- APNIC
- Country
- KR
- Delegated
- Apr 23, 1996
- Status
- assigned
Report abuse
Abuse contact
- irt@
nic. or. kr - Name
- IRT-KRNIC-KR
- Handle
- IRT-KRNIC-KR