Data as of Nov 7, 2026
61.100.128.0/18
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 |
|---|---|---|---|---|
| 61.100.180.0/22 since Apr 2025 | AS9952 | Hosting | Sejong Networks | |
| 61.100.180.0/24 since Oct 2020 | AS9952 | Hosting | Sejong Networks | |
| 61.100.181.0/24 since Oct 2020 | AS9952 | Hosting | Sejong Networks | |
| 61.100.182.0/24 since Oct 2020 | AS9952 | Hosting | Sejong Networks | |
| 61.100.183.0/24 since Apr 2024 | AS9952 | Hosting | Sejong Networks | |
| 61.100.184.0/22 since Apr 2025 | AS9952 | Hosting | Sejong Networks | |
| 61.100.184.0/24 since Apr 2024 | AS9952 | Hosting | Sejong Networks | |
| 61.100.185.0/24 since Apr 2024 | AS9952 | Hosting | Sejong Networks | |
| 61.100.186.0/24 since May 2023 | AS9952 | Hosting | Sejong Networks | |
| 61.100.187.0/24 since Apr 2024 | AS9952 | Hosting | Sejong Networks | |
| 61.100.188.0/24 since Oct 2020 | AS9952 | Hosting | Sejong Networks | |
| 61.100.191.0/24 since Dec 2019 | 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
16,384 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Internet provider | 13,824 | 84% | 2 | |
| Hosting | 2,560 | 16% | 10 |
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 |
|---|---|---|---|---|---|
| 61.100.132.0/23 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 61.100.132.0/23 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 61.100.134.0/24 | AS45390 | RADB | AS45390 | MAINT-AS9318 | Nov 13, 2023 |
| 61.100.146.0/23 | AS9318 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Apr 28, 2006 |
| 61.100.146.0/23 | AS9848 | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 19, 2005 |
| 61.100.176.0/20 | AS9952 | RADB | SejongTelecom.co.ltd | MAINT-AS4670 | Apr 3, 2025 |
| 61.100.184.0/21 | AS9848 | RADB | SejongTelecom.co.ltd | MAINT-AS4670 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 61.
100. 128. 0/ 18 - 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
- Mar 21, 2001
- Status
- assigned
Report abuse
Abuse contact
- irt@
nic. or. kr - Name
- IRT-KRNIC-KR
- Handle
- IRT-KRNIC-KR