How to check the certificate number of changing residence in Spain?

Numero de emergency is the stamped paper (that is, the application form) that you send to the immigration office. The immigration office will write a number on the paper, that is, the number.

It seems that you can also use your residence number (Nie) to check.

You should fill in the year of birth and the date of delivery of the materials.

https://ssweb.map.es/infoext2/html/indexexpe.html

This website is searched by document number. The first line is the ID number, the second line is the date when the materials were sent to the immigration office, and the third line is your birth year.

https://ssweb.map.es/infoext2/

This is checked with the residence number (Nie). In the first line, the residence number (Nie) should be filled with X first, then the number and the last letter. The second and third lines are the date when the materials were submitted to the Immigration Bureau. The third line is your year of birth.

The residence number will not change. So whenever you check in, you can use the residence number to check.