This should be in the landline for him, not in wireless…moving

????

@formerlyknownas simply moved your topic to the correct category.

To your question, unless something has changed *61 doesn't work on traditional landlines. So if you've been using it you must have digital phone service, where your phone plugs in a modem. No matter what service you have a phone with a good call blocker or other 3rd party blocker will do more than any phone company blocking service. 

No it's a true landline, but maybe that is why there is a 10 number limit. I'll have to check to see if the calls are getting through anyway.  I kept some of the numbers that I blocked, so I can check those. With the cost of my monthly bill, I should be getting the 100 limit. 

Surprised *61 works. You might want to look into what was suggested.

No one suggested anything!

Digital phone (VOIP) allows 100 blocked numbers.  

Apparently you can block up to 10 numbers on a traditional landline. https://www.att.com/support/article/local-long-distance/KM1010645/

Block unwanted calls with Call Block (*60)

" No matter what service you have a phone with a good call blocker or other 3rd party blocker will do more than any phone company blocking service. "