Slovakia DNS Propagation Checker
Run a DNS lookup against 6 resolvers located in Slovakia — Petržalka · Bratislava · Hnúšťa · Bánovce nad Bebravou · Nové Mesto nad Váhom · Hnúšťa.
- Resolved
- No answer
- Checking
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Petržalka
Slovakia
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Bratislava
Slovakia
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Hnúšťa
Slovakia
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Bánovce nad Bebravou
Slovakia
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Nové Mesto nad Váhom
Slovakia
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Hnúšťa
Slovakia
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What checking DNS from Slovakia tells you
A DNS resolver keeps a cached copy of each record for as long as its time-to-live allows, and does so separately in every location. A change you have published can be live on one resolver while another still serves the old answer.
Checking from Slovakia looks up the record on servers inside the country, so you see what people there actually get rather than what a resolver on another continent returns.
This matters most right after you edit a record: an update visible on a global resolver like 8.8.8.8 can still be stale at a local ISP in Slovakia until its cached copy expires. The check confirms the new value has reached the resolvers your Slovakia visitors depend on.
Since a 2017 amendment to the Gambling Act, one Slovak authority has kept a weekly list of sites that internet providers must block. The tax office started it; the Úrad pre reguláciu hazardných hier, the gambling regulator created under the 2019 Gambling Act, now maintains the zoznam zakázaných webových sídel and republishes it every first working day of the week. Slovak Telekom, Orange and O2 drop the listed domains at their own resolvers.
Almost nobody here picks a resolver. Households take whatever Slovak Telekom, Orange Slovensko or O2 assigns over DHCP, and those resolvers carry the blocklist. Checking a record from inside Slovakia shows what those defaults return, gambling blocks included, not the clean answer 8.8.8.8 gives from abroad. A domain that resolves on a public resolver but fails on Slovak Telekom is being blocked, not lagging in propagation.
Slovakia also peers at home: SIX, the Slovak Internet eXchange, has run out of the Slovak Technical University in Bratislava since 1996, so well-connected content resolves close by.
- Slovak Telekom213.81.153.153 Incumbent (AS6855); default resolver, enforces the gambling blocklist
- Orange Slovensko Largest mobile operator (AS15962); applies the same blocks
- O2 Slovakia Third national operator; default resolver on its lines
Answers from Slovak ISP resolvers reflect the state's mandatory gambling blocklist, maintained by the Úrad pre reguláciu hazardných hier and updated weekly, so a listed domain can resolve on a public resolver yet return no usable answer through Slovak Telekom, Orange or O2.
How DNS propagation works
Every DNS record carries a time-to-live: the seconds a resolver may keep its cached answer before asking again. Change a record and resolvers holding the old value keep serving it until that timer runs out.
Propagation is this expiry playing out across many independent resolvers, so a lower time-to-live set ahead of a change makes it take effect sooner. There is no fixed waiting period — each record's time-to-live decides how long the old answer lingers.
Frequently Asked Questions
Why do DNS servers in Slovakia return different results than 8.8.8.8?
Two things cause it. Each resolver caches independently, so one can hold an older answer than another.
And content delivery networks reply based on where the asking resolver is, steering a resolver in Slovakia toward a nearby edge node.
Both answers can be correct at the same time for their own location.
How long until a DNS change is visible in Slovakia?
It depends on the record's time-to-live, not on the country.
Resolvers in Slovakia keep the previous answer until their cached copy expires, then pick up the new one.
If you lowered the time-to-live before making the change, it appears sooner; otherwise the old value can persist until the original timer elapses.
Which DNS server should users in Slovakia use?
For most people the resolver their internet provider assigns is fine and usually the lowest latency.
Anyone who wants an alternative can point to a public resolver reachable from Slovakia, such as Cloudflare (1.1.1.1) or Google (8.8.8.8); the right choice depends on whether you value speed, privacy, or filtering.
Why check DNS from Slovakia specifically?
Because it shows what visitors in Slovakia actually resolve, which can differ from a global lookup.
If your audience is in Slovakia, or you have moved hosting or mail there, checking against in-country resolvers confirms the records have reached the servers those users rely on.
Why does a gambling site resolve on 8.8.8.8 but fail on my Slovak provider?
Slovakia's gambling regulator, the Úrad pre reguláciu hazardných hier, publishes a list of prohibited websites every first working day of the week, and access providers such as Slovak Telekom, Orange and O2 must block them. Enforcement happens at the resolver, so a listed domain returns no usable answer on a provider's DNS while a public resolver like 8.8.8.8 or 1.1.1.1, which does not carry the list, still returns the real record. The regulator emails the operator a notice first and adds the domain if the offer is not withdrawn within ten days.
Does Slovakia run a national public DNS resolver?
No widely used one. SK-NIC administers the .sk country-code registry but does not offer a public recursive resolver for households, the way the Czech registry runs its ODVR. Most Slovaks take whatever Slovak Telekom, Orange Slovensko or O2 assigns, and technically minded users switch to a foreign public resolver such as 8.8.8.8 or 1.1.1.1, which is also the usual way around the gambling blocklist. Locally, traffic peers through SIX in Bratislava, running since 1996, and NIX.SK, a second exchange in the city since 2015, so a well-hosted .sk site resolves without leaving the country.
