How long does DNS propagation take?

DNS propagation time is primarily determined by the TTL (Time to Live) value of the previous DNS record. A TTL of 3600 means resolvers can cache the old record for up to one hour. To speed up a planned DNS change, reduce the TTL to 300 seconds at least 24–48 hours before making the change.

How do I check if my DNS changes have propagated worldwide?

Enter your domain into the DNS propagation checker and select the record type. The tool queries from 50+ nodes across Europe, North America, Asia, and other regions. Nodes are highlighted green when they return the new value and red when they still return the old cached value. The world map shows propagation progress at a glance.

Why do some locations still show the old DNS record after I made a change?

Resolvers around the world cache DNS records for the duration of the record's TTL. Until that cache expires, different users in different regions may receive different DNS responses. This is normal — the old value will be replaced automatically once the TTL period has passed on each individual resolver.

Does changing my A record affect my MX record propagation?

No. Each DNS record type propagates independently. Changing your A record has no effect on the propagation status of your MX, CNAME, or TXT records. Use the record type selector to test each record type individually when verifying a full DNS migration.

github.com の DNS 伝播チェック

If set, nodes are highlighted green/red based on match.

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DNS 伝播： github.com

拠点	解決済み値	TTL	ステータス
Albania, Tirana
Australia, Sydney
Bosnia and Herzegovina, Novi Travnik
Bulgaria, Sofia
Canada, Montreal
Switzerland, Bern
Chile, Santiago
China, Hohhot
Germany, Nuernberg
Germany, Frankfurt am Main
Germany, Frankfurt am Main
Germany, Limburg
Germany, Frankfurt am Main
Germany, Duesseldorf
Denmark, Glostrup Municipality
Spain, Bilbao
Finland, Helsinki
Finland, Helsinki
France, Gravelines
France, Paris
United Kingdom, London
Georgia, Tbilisi
Greece, Athens
Hong Kong, Hong Kong
Croatia, Zagreb
Hungary, Budapest
Indonesia, Jakarta
Israel, Petach Tikwa
Israel, Netanja
India, New Delhi
Iceland, Reykjavik (Miðborg)
Italy, Como
Kuwait, Kuwait City
Lithuania, Pilaite
Latvia, Riga
Moldova, Chisinau
Netherlands, Amsterdam
Netherlands, Amsterdam
Netherlands, Amsterdam
Netherlands, Amsterdam
Norway, Oslo
Poland, Warsaw
Romania, Bacău
Romania, Bucharest
Serbia, Belgrade
Russia, St Petersburg
Singapore, Singapore
Turkey, Istanbul
Taiwan, Taipei
United States, Miami
United States, Dallas
United States, Kansas City
United States, Dallas
South Africa, Johannesburg