Data as of Nov 3, 2026
211.239.0.0/17
No anonymizer space · no proxy exits in 30 daysSejong Networks
Announcements
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 |
|---|---|---|---|---|
| 211.239.112.0/20 since Apr 2025 | AS9952 | Hosting | Sejong Networks | |
| 211.239.112.0/24 since Oct 2024 | AS9952 | Hosting | Sejong Networks | |
| 211.239.113.0/24 since May 2024 | AS9952 | Hosting | Sejong Networks | |
| 211.239.114.0/24 since Oct 2024 | AS9952 | Hosting | Sejong Networks | |
| 211.239.115.0/24 since Aug 2024 | AS9952 | Hosting | Sejong Networks | |
| 211.239.116.0/24 since Jun 2021 | AS9952 | Hosting | Sejong Networks | |
| 211.239.117.0/24 since Jun 2021 | AS9952 | Hosting | Sejong Networks | |
| 211.239.118.0/24 since Oct 2024 | AS9952 | Hosting | Sejong Networks | |
| 211.239.119.0/24 since Jun 2021 | AS9952 | Hosting | Sejong Networks | |
| 211.239.120.0/24 since Jun 2021 | AS9952 | Hosting | Sejong Networks | |
| 211.239.121.0/24 since Aug 2024 | AS9952 | Hosting | Sejong Networks | |
| 211.239.122.0/24 since Jun 2021 | AS9952 | Hosting | Sejong Networks | |
| 211.239.123.0/24 since Jun 2021 | AS9952 | Hosting | Sejong Networks | |
| 211.239.124.0/24 since Feb 2024 | AS9952 | Hosting | Sejong Networks | |
| 211.239.125.0/24 since Oct 2024 | AS9952 | Hosting | Sejong Networks | |
| 211.239.126.0/24 since May 2024 | AS9952 | Hosting | Sejong Networks | |
| 211.239.127.0/24 since Aug 2024 | AS9952 | Hosting | Sejong Networks |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
32,768 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Internet provider | 28,672 | 88% | 1 | |
| Hosting | 4,096 | 13% | 16 |
Network & registry
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
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS9848 | RADB | contact [email protected] if necessary | MAINT-AS3786 | Nov 13, 2023 |
| AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 211.239.12.0/23 | AS17594 | RADB | SMBS | MAINT-AS4766 | Nov 13, 2023 |
| 211.239.25.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 211.239.35.0/24 | AS38092 | RADB | Sejong Telecom | MAINT-AS4766 | Nov 13, 2023 |
| 211.239.35.0/24 | AS38092 | NTTCOM | proxy for HANARO TELECOM route | MAINT-HANARO | May 4, 2008 |
| 211.239.44.0/24 | AS38129 | RADB | Proxy-Registered Route Object by LG Dacom(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
| 211.239.46.0/24 | AS9848 | RADB | Proxy-Registered Route Object by DACOM(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
| 211.239.46.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 211.239.64.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 211.239.67.0/24 | AS4670 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Jan 7, 2005 |
| 211.239.67.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 211.239.73.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 211.239.80.0/24 | AS38129 | RADB | Proxy-Registered Route Object by LG Dacom(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
| 211.239.81.0/24 | AS38129 | RADB | Proxy-Registered Route Object by LG Dacom(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 211.239.0.0/17
- 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
- Sep 8, 2000
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- IRT-KRNIC-KR
- Handle
- IRT-KRNIC-KR