HowToUnblockWebsite

You Changed DNS and the Site Is Still Blocked: Why

The short answer

Changing DNS changes the address a domain resolves to, not the network your traffic leaves from. A block based on your IP, network, country or account stays in place. DNS only helps when the block is a poisoned or wrong lookup, which is one narrow case.

The advice to "just change your DNS" is everywhere and it is right for exactly one kind of block: the lookup itself is wrong or tampered with. For every other block the site sees your request arrive from the same address as before, so nothing about the decision changes. This page separates the two cases so an afternoon is not spent on the wrong fix.

What DNS actually does, and what it does not

DNS is the phone book. When you type a name, your device asks a resolver for the address behind it. Changing the resolver from your provider's to a public one changes who answers that question, not which network the connection then travels over. The request still leaves your router, from your public address, to the same destination.

A website deciding whether to serve you looks at the connection itself: the source address, the network it belongs to, the country it appears to be in, the cookies and account you carry. None of that is in the DNS answer, which is why a DNS switch can be made and the block can be untouched.

The one case where DNS is the fix

If the name does not resolve at all, or resolves to an address that does not answer, the lookup is the problem. That happens with a local resolver that filters by policy, a stale cached record, or a resolver that has been given a wrong answer for a name that is perfectly reachable elsewhere.

The test is simple: compare what your machine resolves with what an independent resolver returns. If your machine returns one address and a public resolver returns a different, working one, DNS is your problem. If both return the same address, DNS is not involved and no amount of switching will change the outcome.

  • Flush the local cache after changing resolvers, or the old answer keeps being used.
  • Test in a private window with no extensions, because some extensions filter names locally.
  • Try a different device on the same network; if it fails too, the network is the common factor.
  • Try the same device on mobile data; if it works, the block is on your fixed connection.

What does change the outcome

A block that keys on your network is answered by leaving that network at the connection level: a proxy that terminates your request from a different address, or a remote desktop where the browser runs on another machine entirely and you watch the screen. Both change the source the site sees, which is the thing that was being judged.

A block that keys on your account or session is answered differently again: clearing the state, signing in from the new address, or accepting that the account itself carries the restriction. Moving address does not reset an account decision, and that is worth knowing before buying anything.

Worked example: a supplier portal that would not open

A buyer could not reach a supplier portal from the office. The company IT note said to switch DNS to a public resolver, which they did, and the portal still refused with the same message. Nothing about the symptom changed, because the portal was not failing to resolve: it was answering, and refusing the office address range, which the supplier had restricted after a fraud incident.

Comparing the two resolvers took a minute and returned identical addresses, which ruled DNS out completely. The buyer then opened the portal through a private static proxy address on a 30-day term, and the connection came from an address the supplier had not restricted. The portal loaded, the same account worked, and no setting on the office network had to change.

The lesson was not that DNS is useless, it was that the symptom had been classified wrong. A refusal from a site that answers is a decision by that site, and the only lever for a decision about your network is to stop arriving from that network.

Which block you have, and whether DNS is relevant

SymptomWhat it meansDNS helps?What to do
Name does not resolve; other sites fineLookup filtered or broken locallyYesChange resolver, flush the cache
Resolves fine, page returns a block noticeSite is deciding per connectionNoChange the source address with a proxy
Resolves fine, connection times outPath filtered upstreamNoProxy or a machine elsewhere
Works on mobile data, fails on Wi-FiYour network is filteredNoProxy on the fixed connection
Works signed out, blocked signed inAccount-level restrictionNoAddress change alone will not help

Changing DNS is free and harmless; it is just rarely the fix for a block notice, and never the fix for an account decision.

Diagnose before you change anything else

  • 1Note the exact symptom: no resolution, a block page, a timeout, or a login refusal.
  • 2Compare your resolver answer with an independent resolver for the same name.
  • 3Flush the DNS cache and retry in a clean browser profile.
  • 4Test the same site on a phone using mobile data, not the office Wi-Fi.
  • 5Decide whether the block follows the network or the account, then choose the matching fix.

Where this connects on this site

What this will not do

  • A proxy changes the address a site sees; it does not make a restricted account unrestricted.
  • Changing DNS cannot defeat filtering that inspects the connection rather than the lookup.
  • No address change is a guarantee of access: the destination sets its own rules and can change them.
  • A proxy address shared with other users can itself become blocked, which is why private addresses are the safer buy.

Questions this page gets asked

Should I change DNS anyway?
It costs nothing and takes two minutes, so do it as a test rather than as a fix. If the address your machine resolves matches an independent resolver and the site still refuses, you have proved DNS is not the cause and can stop spending time on it.
Why does it work on my phone but not my laptop?
The phone is probably on mobile data, which is a different network leaving from a different address. That single difference is the most useful test available: it tells you the block follows the connection, and it narrows the problem to the fixed network rather than the device or the browser.
Does a VPN change my DNS?
Usually both the resolver and the route, which is why a VPN sometimes appears to fix blocks that DNS cannot. The part doing the work is the changed route, and the trade is that you share an address with many other users, some of whom may already have burned it.
Is a DNS change enough for a country restriction?
No. A country restriction is applied to the address the request arrives from. The lookup is not consulted, so a resolver in another country changes nothing. You need the request itself to originate from an address in the permitted country.

Last reviewed 2026-10-27. Written for readers in the United States and elsewhere; rules about access, email and consent differ by country, and nothing on this page is legal advice.

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