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Which network your traffic belongs to, and how to check where your DNS queries go.
Your network
ISP / network
Checking…
Encrypted DNS in this browser
Checking…
Tests whether this browser resolves via DNS over HTTPS to Cloudflare, one of the common secure-DNS setups. It cannot see other resolvers.
Check your resolver from a terminal
# Which resolver reached Cloudflare when you asked?
nslookup -type=txt whoami.cloudflare 1.1.1.1
# Your resolver's address (macOS / Linux / Windows PowerShell)
scutil --dns | grep nameserver # macOS
resolvectl status | grep DNS # Linux (systemd)
Get-DnsClientServerAddress # Windows
With a VPN connected, the resolver should belong to the VPN provider (often a 10.x address inside the tunnel), not your ISP. If it is your ISP's, DNS is leaking: turn on the app's DNS protection setting.
Everything on this page runs in your browser. We do not log what you check, and no result — no address, no email, no speed figure — leaves your device. Analytics records that the tool was used, never what it returned. Privacy policy. Tool last reviewed 2026-09-06.
What a browser can and cannot see
Your public IP and its network are visible to any server you talk to, so this page can show them from our own edge. The DNS resolver your device uses is not visible to a web server: it is the party that asked the authoritative nameserver on your behalf, and only that nameserver sees it. Doing that check honestly needs an authoritative nameserver we run and can read logs from. It is on the roadmap; until then we would rather give you the terminal command than route your query through a third-party API that would see your address.
Why the ISP field is useful on a VPN
Streaming services, banks and ticket sites do not block VPNs by IP address one at a time. They block by network: if the ASN is a hosting provider, the address is treated as a VPN or datacentre. That is why some servers are "detected" and others are not — the ones that pass are on ranges registered as residential or, in the case of some providers, on their own ASN with a clean reputation. Seeing the network name here tells you which kind you are on.
Switching your DNS
Without a VPN, the single most useful privacy change on a device is moving DNS from the ISP's resolver to an encrypted one. iOS and Android support DNS over HTTPS/TLS in settings; Firefox, Chrome and Edge have it under privacy settings. With a VPN, leave DNS to the VPN — a manually set public resolver can itself become a leak if it bypasses the tunnel.
Frequently asked questions
Who is my ISP?
The network your public IP address is registered to, shown above. On home broadband it is your provider; on a phone it is your carrier; on a VPN it is a hosting company in the server's country, which is the point. Corporate networks often show the company itself.
What DNS server am I using?
Whatever your device or network is configured with — usually your ISP's resolver by default, or 1.1.1.1 / 8.8.8.8 if you changed it, or the VPN's resolver when the tunnel is up. A web page cannot see this directly; the commands below show it from a terminal, and the page explains the browser-side check we can do.
Why does my ISP matter for privacy?
Your ISP sees every domain you look up (via DNS) and every server you connect to, even over HTTPS. In many countries it is required to keep that for months and hand it over on request. A VPN moves that visibility from the ISP to the VPN provider, which is why who owns the VPN is the first thing on every review here.
Is using my ISP's DNS a problem?
It means the ISP logs your lookups, may hijack failed ones to show ads, and in some countries is where blocking happens. Switching the device to an encrypted resolver (DNS over HTTPS to 1.1.1.1, 9.9.9.9 or a VPN's own) removes the ISP from that path even without a VPN.
What is an ASN?
An Autonomous System Number identifies a network on the internet's routing map. Every ISP, cloud provider and large company has one. The ASN is what geolocation and fraud systems actually look at when deciding whether an address is residential, mobile, or a datacentre — which is why some VPN servers get blocked by streaming sites: their ASN says "hosting".