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Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.
Ten-digit dialing became mandatory across Idaho on August 5, 2017. [ 3 ] [ 4 ] [ 5 ] 986 is the second statewide overlay, following the example of area codes 304 and 681 in West Virginia in 2009. Service area and central office codes
For example, individual extensions at Universität des Saarlandes can be dialed directly from outside via their four-digit internal extension +49-681-302-xxxx, whereas the university's official main number is +49-681-302-0 [8] (49 is the country code for Germany, 681 is the area code for Saarbrücken, 302 the prefix for the university).
He then learned that the Idaho Wild Sheep Foundation shared similar concerns. Officials worried that bighorn sheep — one of the rarest hunting tags in Idaho — could be targeted using collar data.
Vertical service code Service definition Australia Japan UK Tone dialing Pulse dialing *51 1151 Who called me. Provides the directory number, date and time of unanswered calls. *52 1152 Call Hold (Single Line Variety Package). Permits the call to be picked up at another station. *53 1153
A 9 would be inserted as the new second digit of all area codes (e.g. 212 would become 2912, 916 would become 9916). Permissive dialing would be allowed because exchange equipment, on detecting a 9 as the second digit of the area code, would respond appropriately to expect 11 digits, or 10 in the absence of a 9 in that position.
[1]: §21.3.2 302 Moved Temporarily The client should try at the address in the Contact field. If an Expires field is present, the client may cache the result for that period of time. [1]: §21.3.3 305 Use Proxy The Contact field details a proxy that must be used to access the requested destination. [1]: §21.3.4 380 Alternative Service