(530) 555-5555 appears on about 50 pages on the Davis Wiki, including many businesses.
It is not a real phone number, but it could be. Telephone number of the format 555-01xx are reserved, but the rest of the 555 exchange is actually valid. Many people think all 555-xxxx are fake, but some are is use. For instance, calling 530-555-1212 is the same as calling 411 in Davis, while 916-555-1212 would get you 411 service in Sacramento.
For a good time, call....
People being lazy with templates, sounds like a fun gnoming project —StevenDaubert