what is level 3 comm?

From: Rod-Lists 
I got a call from 615-696-6044.
Telcodata.us tells me that 615-696-6* is thru level 3 communications.

=============================================================== From: Joe Freeman ------------------------------------------------------ Tier 1 Carrier's Carrier

=============================================================== From: Dave Brockman ------------------------------------------------------ -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 http://www.level3.com/ They probably originate the DID that called you, or the Spoofed CID it presented. You think email SPAM is bad, just wait till you try and start tracking down annoying phone callers. Regards, dtb - -- "Some things in life can never be fully appreciated nor understood unless experienced firsthand. Some things in networking can never be fully understood by someone who neither builds commercial networking equipment nor runs an operational network." RFC 1925 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlApJ2MACgkQABP1RO+tr2RACwCgs2RPmWbSS0+wJLQmjbwoChsD fO8AoI1d/+7a6dwPr8CyIc9/YLcG63Iv =pvY/ -----END PGP SIGNATURE-----