For those that don't know, D&B stands for Dun & Bradstreet (https://www.dnb.com/). They have this concept of a D-U-N-S Number which basically means information about your business is in their database.
Last I checked expedited D&B was around $40 USD (10 business days) and same-day D&B around $500 USD.
Free D&B said it would take 30 business days, but it actually only took them 5 business days when I applied for it.
If you sell software to the government, having a DUNS number is actually a requirement, too. At least to get listed on SAM.gov. You also need a CAGE number. I don't remember it taking me too long to get a DUNS number - and you can definitely avoid paying them any money.
Last I checked expedited D&B was around $40 USD (10 business days) and same-day D&B around $500 USD.
Free D&B said it would take 30 business days, but it actually only took them 5 business days when I applied for it.