I'm assuming you don't have a subscription to the LERG because SHA
information is in LERG 7 SHA. You can also find the incumbent for each
rate center on localcallingguide and then go to the carrier's site and
look up which end offices are associated with each tandem to figure it
out that way.
Assuming the number isn't held by someone exempt from porting, what would
prevent someone from being able to port a number from a particular rate center
in a LATA they have coverage in?
We picked up a particular carrier for our out-of-area needs and the first thing
we throw at them in a LATA
Yes, but building CSRs standard as part of the business processes around
porting can pay efficiency dividends with those rejection scenarios, and
reduce the rate of rejections. At least, that was my observation in my
time in the LEC world. It's good to make one's porting requests more
robust
My experience with a CSR is that it's only required if the port order fails
(rejected by losing carrier). The winning carrier will often verify that all
the TNs belong to the losing carrier listed on the port order and use that as
an easy way to "check" the port order without a CSR.
