678-136-7092 is Steve's number. But note the "1".
In 1981, Tommy Tutone's song 867-5309 hit the charts. This was at a time when dialing 7 digits worked in every area code. This caused a lot of problems for the numerous unfortunates who did have that number in their area code. Since then, Hollywood (and music) take PII seriously.
The middle triplet of numbers is called the "Exchange" or "Prefix" and often map to a particular town. Exchanges starting with 0 or 1 are currently not allowed.* This makes the number even less real than the 555-xxxx numbers Hollywood usually uses, since the "555" block is reserved for phone company services (e.g. 555-1212 was the old number for directory assistance before 411) and it's even possible for a company to get a 555 number.
So the "1" in the first digit of the exchange field makes this number unroutable, equivalent to an IP address of 241.211.108.136 (which you'd have to be an IPv4 geek to see the problem with) or www.example.fed.
* because "1" means an area code follows (1-800-555-1000) and "0" is reserved for operators, international calls and the like (011-44-20-1234-5678).