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Data as of Nov 7, 2026

203.242.0.0/19

No anonymizer space · no proxy exits in 30 days

Korea Telecom

Announcement
this exact prefix
No RPKI
Announced by
AS4766
Type
Residential
81% of it

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

Arrived
PrefixOriginTypeHolderRPKI
203.242.0.0/23
since Feb 2010
AS17841BusinessKorea Telecom
203.242.0.0/24
since Feb 2010
AS17841BusinessKorea Telecom
203.242.1.0/24
since Feb 2010
AS17841BusinessKorea Telecom
203.242.2.0/24
since Feb 2010
AS17841BusinessKorea Telecom
203.242.2.0/25AS17841BusinessKorea Telecom
203.242.2.128/25AS17841BusinessKorea Telecom
203.242.3.0/24
since Jun 2013
AS17841BusinessKorea Telecom
203.242.3.0/25AS17841BusinessKorea Telecom
203.242.3.128/25AS17841BusinessKorea Telecom
203.242.4.0/24
since Dec 2017
AS17841BusinessKorea Telecom
203.242.4.0/25AS17841BusinessKorea Telecom
203.242.4.128/25AS17841BusinessKorea Telecom
203.242.5.0/24
since Oct 2020
AS45400ResidentialKorea Telecom
203.242.6.0/24
since Feb 2022
AS17841BusinessKorea Telecom
203.242.6.0/25AS17841BusinessKorea Telecom
203.242.6.128/25AS17841BusinessKorea Telecom

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

8,192 addresses
TypeAddressesShareRanges
Residential6,65681%2
Business1,53619%10

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS4766

KR
Name
Korea Telecom
Type
Internet provider
Registered
Apr 22, 1996
Domain
kt.com
Website
www.kt.com/eng/main.jsp
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
VPN servers
1