Following are thousands block(s) (NXX-X) data requirements for the Routing Data Base System (RDBS). This form may need to be completed for newly assigned thousands blocks.

• • • • New Block All items are required unless otherwise noted.

        Data change Items 1-4 are required, as are the appropriate element(s) to be changed.

        Returned Only items 1-4 should be provided.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

• • • • • • 1. NPA ______________ Numbering Plan Area code (Area Code) in which the thousands block (NXX-X) has been assigned

            2. LRN ______________ Location Routing Number

            2. BLOCK ______________ Thousands Block (s) (the assigned NXX-X)

            3. STATUS ______________ E = new block, M = change to supporting data, R = Returned

            4. EFF DATE ____/____/____ Date a new code can first be routed to, date supporting data change will be effective or, date of disconnect (mm/dd/yy)

            5. TYPE ______________ Identifies use (Choose one - EOC, PLN, PMC, RCC, SIC, TST,SP1,SP2)

            6. SSC ______________ Special Service Code - (Choose one (or valid combinations up to four) - A, B, C, I, M, N, O, R,S, T, W, X, Z, 8)

            7. DIND ______________ Dialable Indicator (Y - if directly dialable, N - if not)

            8. TR DIG EO ______________ Number of digits to be outpulsed to a switching entity/POI end office by an interexchange carrier (e.g. NPA + NXX + line is 10).

            9. TR DIG AT ______________ Number of digits to be outpulsed to a switching entity/POI tandem office by an interexchange carrier (e.g. NPA + NXX + line is 10).

            10. OCN ______________ Operating Company Number

            11. LOCALITY ______________ Locality, within RATE CENTER: _________________ (max 10 char ea)

            12. STATE ______________ Two character code for the state or territory of the locality

13. --------------- Switch Data -- (valid switch code(s) (e.g. CLLI Ô ) should be entered - line "a" is required) -------

NXX-X ___SWITCH CLLI____ LRN ____NXX-X__ _SWITCH CLLI____ LRN

• • • •  

    a _______ ________________ _______ f _______ _______________ _______

    b _______ ________________ _______ g _______ _______________ _______

    c _______ ________________ _______ h _______ _______________ _______

    •  

    d _______ ________________ _______ i _______ _______________ _______

    •  

    e _______ ________________ _______ j _______ _______________ _______