Say I have a phone number (or an LRN). How do I find out what tandem switch it's actually homed to? I know that the phone number (or LRN) should be homed to whatever tandem switch the ILEC in that rate center is homed to, but A) that doesn't always happen and B) you can't always easily (telcodata.us) determine what tandem the ILEC is using. I know I can look SHAs up in the LERG, but I don't have that access. Is that the only way? ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com