Why does ipnow.kr show SK Telecom as my ISP?
ipnow.kr shows SK Telecom when your public IP belongs to its mobile network, AS9644. SK Telecom is Korea's mobile-only carrier under the SK Group, so this normally appears when you are connected over LTE, 5G or an SK Telecom mobile hotspot rather than home broadband.
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What is SK Telecom?
SK Telecom is the mobile carrier arm of SK Group, one of Korea's three major telecom groups alongside KT and LG Uplus. Unlike KT and LG Uplus, SK Telecom does not sell its own separate fixed home-broadband brand; home internet under the SK Group is provided by the related but distinct company SK Broadband.
Because of this split, seeing "SK Telecom" specifically on an IP lookup almost always points to a mobile data connection rather than a home Wi-Fi line.
Why does my IP show SK Telecom?
If your phone or tablet is connected over LTE or 5G on an SK Telecom SIM, or you are tethered to an SK Telecom mobile hotspot, this is the expected result.
It can also show up if you are using a VPN or proxy whose exit server happens to be hosted on an SK Telecom mobile IP range, or if a device is using an IoT or MiFi SIM issued through SK Telecom. If this looks unexpected, check that your VPN works to confirm whether a VPN is active.
- A phone or tablet on SK Telecom LTE or 5G data
- A mobile hotspot or MiFi device on an SK Telecom SIM
- A VPN or proxy exiting through an SK Telecom mobile address
What is SK Telecom's ASN?
SK Telecom's Autonomous System Number is AS9644, the identifier that marks a block of mobile IP addresses as belonging to SK Telecom rather than SK Broadband or another carrier. See what is an ASN for a general explanation of ASNs.
SK Telecom does not have a publicly verified public DNS resolver pair the way some fixed-line carriers do, so this page does not list one; most SK Telecom mobile devices simply use whichever DNS servers the carrier assigns automatically.
How do I confirm this on ipnow.kr, and does SK Telecom support IPv6?
Open the ipnow.kr homepage on the connection in question and check the ISP and ASN fields; on SK Telecom mobile data you should see "SK Telecom" and AS9644 listed. If your city or region looks wrong, why your IP location can be wrong explains why mobile IP location is often especially approximate.
IPv6 availability depends on your carrier, plan and device, and mobile networks in particular can differ from what a home broadband line offers, so treat it as variable rather than guaranteed. Mobile IPs are typically dynamic and frequently reassigned; see dynamic vs static IP for what that means in practice.
| Item | Value | Source |
|---|---|---|
| ASN | AS9644 | DB-IP ASN Lite (2026-09) · 2026-09 |
Frequently asked questions
Is SK Telecom the same company as SK Broadband?
They are related companies under SK Group but operate separate networks: SK Telecom runs mobile data, while SK Broadband runs fixed-line home internet, and each has its own ASN.
Why does my IP change often on SK Telecom mobile data?
Mobile IPs are dynamic and are frequently reassigned as you move between cell towers or switch between LTE and 5G, which is normal carrier behavior rather than a fault.
Does SK Telecom use CGNAT?
Yes, like most mobile carriers SK Telecom commonly shares a public IPv4 address among several mobile customers through carrier-grade NAT; see what is CGNAT for details.
Can SK Telecom mobile data get a static IP?
Static IPs are not a standard feature of consumer mobile plans; they are far more common on SK Broadband's fixed-line business connections instead.