Data as of Nov 8, 2026
203.240.128.0/19
No anonymizer space · no proxy exits in 30 daysShinbiro · space held by Sejong 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 |
|---|---|---|---|---|
| 203.240.128.0/24 since May 2005 | AS9645 | Business | Sejong Networks | |
| 203.240.132.0/24 since Jan 2024 | AS9848 | Internet provider | Sejong Networks | |
| 203.240.133.0/24 since Jan 2024 | AS9848 | Internet provider | Sejong Networks | |
| 203.240.134.0/24 since Jan 2024 | AS9848 | Internet provider | Sejong Networks | |
| 203.240.135.0/24 since Oct 2023 | AS3786 | Residential | Sejong Networks | |
| 203.240.144.0/24 since Jan 2024 | AS9848 | Internet provider | Sejong Networks | |
| 203.240.145.0/24 since Jan 2024 | AS9848 | Internet provider | Sejong Networks | |
| 203.240.146.0/24 since Jan 2024 | AS9848 | Internet provider | Sejong Networks | |
| 203.240.147.0/24 since Jan 2024 | AS9848 | Internet provider | Sejong Networks | |
| 203.240.148.0/24 since May 2024 | AS9848 | Internet provider | Sejong Networks | |
| 203.240.149.0/24 since Nov 2015 | AS45977 | Business | Sejong Networks | |
| 203.240.150.0/24 since Nov 2015 | AS45977 | Business | Sejong Networks | |
| 203.240.151.0/24 since Nov 2015 | AS45977 | Business | Sejong Networks | |
| 203.240.153.0/24 since Jan 2024 | AS9848 | Internet provider | Sejong Networks | |
| 203.240.159.0/24 since Feb 2008 | AS9980 | Business | Sejong Networks |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
8,192 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 4,608 | 56% | 5 | |
| Internet provider | 2,304 | 28% | 9 | |
| Business | 1,280 | 16% | 5 |
Network & registry
Origin network
AS4670
KR
- Name
- Shinbiro
- Type
- Internet provider
- Registered
- Jun 16, 1995
- Domain
- shinbiro.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
- Apr 2009
- Current origin since
- Apr 2009 · 18 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 203.240.129.0/24 | AS9848 | RADB | SejongTelecom.co.ltd | MAINT-AS4670 | Jul 19, 2026 |
| 203.240.144.0/23 | AS38702 | RADB | The info of AS38702 is available at whois.krnic.net | MAINT-AS4670 | Nov 13, 2023 |
| 203.240.152.0/24 | AS38702 | RADB | The info of AS38702 is available at whois.krnic.net | MAINT-AS4670 | Nov 13, 2023 |
| 203.240.154.0/24 | AS38702 | RADB | The info of AS38702 is available at whois.krnic.net | MAINT-AS4670 | Nov 13, 2023 |
| 203.240.155.0/24 | AS9319 | RADB | Proxy-Registered Route Object by LG Dacom(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
| 203.240.155.0/24 | AS4670 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | May 21, 2007 |
| 203.240.156.0/24 | AS9319 | RADB | Proxy-registered route object | MAINT-AS9304 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 203.
240. 128. 0/ 19 - 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 29, 1996
- Status
- assigned
Report abuse
Abuse contact
- irt@
nic. or. kr - Name
- IRT-KRNIC-KR
- Handle
- IRT-KRNIC-KR