Why does ipnow.kr show KT as my internet provider?
ipnow.kr shows KT when your public IP falls inside a block registered to KT, network number AS4766. This is usually your real home, office or mobile carrier, though it can also happen over a VPN or a line that KT leases to another company.
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What is KT?
KT, formerly known as Korea Telecom, is one of South Korea's three major telecommunications carriers, alongside SK Broadband/SK Telecom and LG Uplus. It sells fixed-line home internet, IPTV and mobile service nationwide, and operates its own large IP address ranges for both broadband and mobile customers.
Because KT carries such a large share of Korean internet traffic, it is one of the most common ISPs shown by IP lookup tools like ipnow.kr for visitors connecting from inside Korea.
Why does my IP show KT?
If you are on a KT home internet line, a KT mobile SIM, or Wi-Fi routed through KT equipment, seeing KT here is simply correct and expected.
KT can also appear even if you are not a direct KT customer. Businesses, schools and apartment complexes sometimes lease bandwidth from KT and resell it under their own name, so the underlying network still reads as KT. A VPN or proxy server hosted on a KT-assigned address will show KT too, even though your real location may be elsewhere; use check that your VPN works to see whether a VPN is actually active on your connection.
- A KT home broadband or mobile connection
- A shared or leased line billed through KT
- A VPN or proxy exiting through a KT IP address
What is KT's ASN, and what DNS servers does it run?
KT operates its own Autonomous System Number, AS4766, the identifier routers use to know a block of addresses belongs to KT. This is the ASN ipnow.kr references when it labels a connection as KT; see what is an ASN for a general explanation of how ASNs work.
KT also runs two public DNS resolvers many KT routers use by default: 168.126.63.1 and 168.126.63.2. You can point any device at these manually, or switch to a different resolver as explained in how to change your DNS server.
How do I confirm this on ipnow.kr, and does KT support IPv6?
Open the ipnow.kr homepage and check the ISP and ASN fields next to your public IP; on a KT line you should see "KT" and AS4766 listed there. If the location shown looks off, why your IP location can be wrong explains why IP-based location is only an estimate.
Whether a given connection also gets an IPv6 address depends on your carrier, plan and device, so it can vary even between two KT customers on similar plans. If you need an address that does not change, KT can provide a business-grade static IP; see dynamic vs static IP for how that differs from the dynamic IP most home lines use.
| Item | Value | Source |
|---|---|---|
| ASN | AS4766 | DB-IP ASN Lite (2026-09) · 2026-09 |
| Public DNS | 168.126.63.1, 168.126.63.2 | KT · 2026-09 |
| Share of IPNOW visitors on this network | 9% | ipnow.kr aggregated access logs (2026-06-26 ~ 2026-09-24) |
| IPv6 share on this network | 0% | ipnow.kr aggregated access logs (2026-06-26 ~ 2026-09-24) |
Frequently asked questions
Is KT the same as Korea Telecom?
Yes. KT is the current brand name of the company formerly called Korea Telecom, and both refer to the same carrier and the same network, AS4766.
Why does my phone show KT but my home Wi-Fi shows a different ISP?
Mobile data and a home router usually get separate public IP addresses from separate address pools, even when both happen to be operated by KT, so the ISP name shown can differ between the two connections.
Can I get a static IP from KT?
KT mainly offers static IPs on business lines; residential plans normally use a dynamic IP that can change when the router restarts, as covered in dynamic vs static IP.
Does KT use CGNAT on mobile data?
Like most mobile carriers, KT commonly shares public IPv4 addresses among several mobile customers through carrier-grade NAT; see what is CGNAT for what that means for you.