Data as of Nov 7, 2026
210.126.128.0/17
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 |
|---|---|---|---|---|
| 210.126.128.0/24 since Oct 2016 | AS9632 | Business | Sejong Networks | |
| 210.126.129.0/24 since Oct 2016 | AS9632 | Business | Sejong Networks | |
| 210.126.134.0/24 since Nov 2016 | AS9632 | Business | Sejong Networks | |
| 210.126.135.0/24 since Oct 2016 | AS9632 | Business | Sejong Networks | |
| 210.126.140.0/24 since Jun 2005 | AS9959 | Business | Sejong Networks | |
| 210.126.152.0/21 since Jul 2026 | AS9848 | Internet provider | Sejong Networks | |
| 210.126.224.0/21 since Aug 2025 | AS9848 | Internet provider | Sejong Networks | |
| 210.126.232.0/21 since Jul 2026 | AS9848 | Internet provider | Sejong Networks | |
| 210.126.232.0/24 since Sep 2026 | AS138195 | Hosting | Sejong Networks | |
| 210.126.233.0/24 since Sep 2026 | AS138195 | Hosting | Sejong Networks | |
| 210.126.234.0/24 since Sep 2026 | AS138195 | Hosting | Sejong Networks | |
| 210.126.235.0/24 since Sep 2026 | AS138195 | Hosting | Sejong Networks | |
| 210.126.236.0/24 since Sep 2026 | AS138195 | Hosting | Sejong Networks | |
| 210.126.237.0/24 since Sep 2026 | AS138195 | Hosting | Sejong Networks | |
| 210.126.238.0/24 since Sep 2026 | AS138195 | 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 | 29,696 | 91% | 8 | |
| Hosting | 1,792 | 5.5% | 7 | |
| Business | 1,280 | 3.9% | 5 |
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
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 210.126.136.0/24 | AS9318 | RADB | SK Broadband | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.136.0/24 | AS18311 | RADB | Sejong Telecom | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.136.0/24 | AS9318 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jan 10, 2005 |
| 210.126.136.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.136.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 210.126.137.0/24 | AS4670 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Jan 7, 2005 |
| 210.126.139.0/24 | AS4670 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Jan 7, 2005 |
| 210.126.141.0/24 | AS9318 | RADB | SK Broadband | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.141.0/24 | AS18311 | RADB | Sejong Telecom | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.141.0/24 | AS9318 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jan 10, 2005 |
| 210.126.141.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.141.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 210.126.150.0/24 | AS4670 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Jan 7, 2005 |
| 210.126.168.0/24 | AS9318 | RADB | SK Broadband | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.168.0/24 | AS18311 | RADB | Sejong Telecom | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.168.0/24 | AS9318 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jan 10, 2005 |
| 210.126.168.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.168.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 210.126.176.0/24 | AS9848 | RADB | SejongTelecom.co.ltd | MAINT-AS4670 | Nov 13, 2023 |
| 210.126.187.0/24 | AS9318 | RADB | SK Broadband | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.187.0/24 | AS18311 | RADB | Sejong Telecom | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.187.0/24 | AS9318 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jan 10, 2005 |
| 210.126.187.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.187.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 210.126.193.0/24 | AS9318 | RADB | SK Broadband | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.193.0/24 | AS18311 | RADB | Sejong Telecom | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.193.0/24 | AS9318 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jan 10, 2005 |
| 210.126.193.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.193.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 210.126.196.0/24 | AS9318 | RADB | SK Broadband | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.196.0/24 | AS18311 | RADB | Sejong Telecom | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.196.0/24 | AS9318 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jan 10, 2005 |
| 210.126.196.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.196.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 210.126.198.0/24 | AS9318 | RADB | SK Broadband | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.198.0/24 | AS18311 | RADB | Sejong Telecom | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.198.0/24 | AS9318 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jan 10, 2005 |
| 210.126.198.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.198.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 210.126.204.0/24 | AS9318 | RADB | SK Broadband | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.204.0/24 | AS18311 | RADB | Sejong Telecom | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.204.0/24 | AS9318 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jan 10, 2005 |
| 210.126.204.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.204.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 210.126.206.0/24 | AS9579 | RADB | Shinyoung Securities CO ., LTD. | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.206.0/24 | AS9579 | NTTCOM | proxy for HANARO TELECOM route | MAINT-HANARO | May 4, 2008 |
| 210.126.206.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.215.0/24 | AS9318 | RADB | SK Broadband | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.215.0/24 | AS18311 | RADB | dreamline | MAINT-AS4766 | Nov 13, 2023 |
| 210.126.215.0/24 | AS9318 | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jan 10, 2005 |
| 210.126.215.0/24 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 210.126.215.0/24 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 210.126.216.0/24 | AS4670 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Jan 7, 2005 |
| 210.126.224.0/20 | AS9772 | RADB | contact [email protected] if necessary | MAINT-AS3786 | Nov 13, 2023 |
| 210.126.224.0/20 | AS38093 | RADB | Transit customer route announce | MAINT-AS9318 | Nov 13, 2023 |
| 210.126.224.0/20 | AS4670 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Jan 12, 2005 |
| 210.126.254.0/24 | AS9709 | RADB | contact [email protected] if necessary | MAINT-AS3786 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 210.
126. 128. 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
- Jul 18, 1996
- Status
- assigned
Report abuse
Abuse contact
- irt@
nic. or. kr - Name
- IRT-KRNIC-KR
- Handle
- IRT-KRNIC-KR