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Some time ago I used a DNS service which queried with something.[I don't remember the other parts of the domain] would answer with

That was quite useful for Web development because could be replaced with anything and the answer would always be whatever you put in its place.

A similar service exists called but it only ever returns

I don't remember the name of the service or if it still exists, does anyone know one which does the same?

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up vote 4 down vote accepted

It sounds like you're describing

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absolutely, looks like it's not well publicized despite being so useful! Many thanks – Simone Feb 28 '14 at 19:00

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