Area codes 212, 646, and 332 lost. Marble Hill's trunk is wired into the Bronx line, and it would have been too expensive for New York Telephone to rewire it. A business with a 212 area code is often perceived as having stability and roots in Manhattan, particularly if a number has been in service for many decades. One example is PEnnsylvania 6-5000 (today 212-736-5000), the number for the Hotel Pennsylvania in Midtown. The hotel claims that it is the oldest continuously used number in New York City. This claim is in dispute, but PEnnsylvania 6-5000 did appear in a 1940 Glenn Miller Orchestra song title.
Telephone number mapping ENUM enabled agent and indicates what item of information he is looking for (email address, telephone number, web address, etc.) in the PC or terminal the number is converted to a domain name. This is sent to ENUM servers on the Internet, which send back the NAPTR records associated with the name. The access information and any priority indicated for them are stored in these. The user gets the requested address back on his PC or terminal. ENUM therefore in fact functions as a mechanism for translating a telephone number into a domain name with the requested address or number