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6 dimensions · leaks / fingerprint / consistency

ASN lookup result for AS4766 Korea Telecom — network size, BGP routing and registration

KRAS4766Korea TelecomISP
WHOIS Topology

South Korea · APNICkt.com

Hosts top sitesBusiness linesCDNHome broadbandMobile networkTor relaysVPN servicesVPS hosting

IPv4 addresses

47,221,888

2,375 announced prefixes

IPv6 addresses

4.51 × 10³⁰

52 announced prefixes

BGP neighbours

…

CAIDA rank

#66

Customer cone 995 ASNs

Estimated users

23.9M

APNIC: 23.9M

RPKI

6% valid

2 invalid · 2,285 not covered

Average purity

82

2,207 sampled IPs

IXPs / facilities

14 / 8

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

Loading routing history…

IP ranges

Currently announced prefixes with their RIR registration and geolocation.

PrefixRPKIRegistrationGeolocationAddresses
59.0.0.0/11Not foundKRKORNETAPNICKRSuncheon2,097,152
121.128.0.0/11Not foundKRKORNETAPNICKRSeoul2,097,152
121.160.0.0/11Not foundKRKORNETAPNICKRSeongbuk-gu2,097,152
125.128.0.0/11Not foundKRKORNETAPNICKRSeongbuk-gu2,097,152
14.64.0.0/12Not foundKRKORNETAPNICKRSouth Korea1,048,576
14.80.0.0/12Not foundKRKORNETAPNICKRSouth Korea1,048,576
59.0.0.0/12Not foundKRKORNETAPNICKRSuncheon1,048,576
59.16.0.0/12Not foundKRKORNETAPNICKRIncheon1,048,576
112.160.0.0/12Not foundKRKORNETAPNICKRIncheon1,048,576
112.176.0.0/12Not foundKRKORNETAPNICKRSouth Korea1,048,576
115.0.0.0/12Not foundKRKORNETAPNICKRSouth Korea1,048,576
118.32.0.0/12Not foundKRKORNETAPNICKRGuri-si1,048,576
118.48.0.0/12Not foundKRKORNETAPNICKRSouth Korea1,048,576
119.192.0.0/12Not foundKRKORNETAPNICKRGangbuk-gu1,048,576
119.208.0.0/12Not foundKRKORNETAPNICKRSouth Korea1,048,576
121.128.0.0/12Not foundKRKORNETAPNICKRSeoul1,048,576
121.144.0.0/12Not foundKRKORNETAPNICKRYeonje-gu1,048,576
121.160.0.0/12Not foundKRKORNETAPNICKRSeongbuk-gu1,048,576
121.176.0.0/12Not foundKRKORNETAPNICKRGimhae1,048,576
125.128.0.0/12Not foundKRKORNETAPNICKRSeongbuk-gu1,048,576

Only the first 500 prefixes are listed; address counts and geography use all prefixes.

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 5,053 / 184,458 （3%） · flagged 3,760

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

121.160.0.0/11376/8192 with data · 293 flagged

59.0.0.0/11367/8192 with data · 289 flagged

121.128.0.0/11338/8192 with data · 260 flagged

118.32.0.0/12214/4096 with data · 136 flagged

119.192.0.0/12205/4096 with data · 160 flagged

125.128.0.0/11193/8192 with data · 143 flagged

218.144.0.0/12181/4096 with data · 139 flagged

112.160.0.0/12178/4096 with data · 144 flagged

221.144.0.0/12165/4096 with data · 122 flagged

222.96.0.0/12157/4096 with data · 114 flagged

175.200.0.0/13130/2048 with data · 99 flagged

14.48.0.0/13112/2048 with data · 93 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 1,17470–84 55750–69 4450–49 31

0.08%

Share of IPv4 reported or blocklisted

35,360

Listed IPs

2,207

Analysed IPs

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

  • KR South Korea
  • GB United Kingdom
  • US United States
Scope
Single country
In registered country
100.0%

Estimated by sampling IPv4 ranges against a geolocation database.

Traffic observation

AS4766 · Last 7 days
Mobile vs. Desktop
Desktop 68.0%Mobile 32.0%
Desktop68.0%Mobile32.0%
Bot vs. Human
Human 75.4%Bot 24.6%
Human75.4%Bot24.6%

Adoption & Usage

Adoption and usage of key protocols

Internet Protocol (IP) Version
IPv4 > 99.9%IPv6 < 0.1%< 0.1%IPv6
IPv4> 99.9%IPv6< 0.1%
HTTP Version
HTTP/1.x
19.0%HTTP/2
55.2%HTTP/3
25.8%
HTTP vs. HTTPS
99.2% HTTPS (encrypted)
Plain HTTP 0.8%
TLS Version
TLS 1.0/1.1< 0.1%TLS 1.25.0%TLS 1.369.0%QUIC26.0%

Security & Attacks

Insights into network and application layer attack traffic

Layer 7 Attacks
GET
95.8%POST
3.4%HEAD
0.6%Other
0.2%

BGP Announcements

Hourly BGP route announcements over the last 7 days

10,168,712
7-day total
443,467
Hourly peak

Data: Cloudflare Radar, licensed under CC BY-NC 4.0

Activity

Hourly traffic over the last 7 days, normalized to this network’s peak.

A pronounced day/night rhythm, typical of networks with human users.

00061218
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Times in UTCLessMore
Peak hour
13:00–14:00
Active hours
19 hrs
Weekend vs weekday
Weekdays ≈ weekends
Busiest day
Tue

Datacenter Presence

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BGP upstreams and neighbours

AS4766Standalone page
Loading upstreams and neighbours…

WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

InformationSourceUpdated
Registered countryRIR daily delegation statistics2026-10-20
Registered address & allocation dateRIR registration data (RDAP)2026-09-26
Organization & company countryAS-to-organization data2026-10-21
Network typeCleanIP ASN canon2026-10-21
Exchanges & facilitiesOperator self-reported interconnection data2026-10-21
Announced prefixes & BGP neighboursPublic BGP routing data2026-10-22
IPv4 geographyGeolocation database—
RPKI validationRPKI ROA validation data2026-10-22
Rank & customer coneCAIDA AS Rank2026-10-01
Estimated users (APNIC)APNIC Labs user estimates2026-10-19
Network tagsPublic routing data community tags2026-10-21
IP reputationCleanIP lookups and neighbour sampling—

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Multi-source cross-checks · In-house reputation data · Real data only

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