Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Willards, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-835 A WLRDMDWRRS1  9212 VERIZON MARYLAND, INC. 242      
410-835 0 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-10   
410-835 1   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-835 2 WLRDMDWRRS1  9212 VERIZON MARYLAND, INC. 242      
410-835 3 WLRDMDWRRS1  9212 VERIZON MARYLAND, INC. 242      
410-835 4 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-04-30   
410-835 5 SLBRMDSBXWX  861F MCC TELEPHONY OF THE MID-ATLANTIC, LLC - MD 242   2010-08-21   
410-835 6   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-06-07   
410-835 7 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2017-04-14   
410-835 8 WLRDMDWRRS1  9212 VERIZON MARYLAND, INC. 242      
410-835 9 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-03-10   
443-232 A SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242      
443-232 0 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-04-30   
443-232 1 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-07-04   
443-232 2 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-07-04   
443-232 3   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-232 4   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-232 5   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-232 6 SLBRMD90DS0  2593 CORE COMMUNICATIONS, INC.- MD 242   2019-06-07   
443-232 7 SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2007-08-08   
443-232 8 SLBRMD902MD  073H TELNYX LLC 242   2017-09-13   
443-232 9 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-04-30   
667-676 A SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-676 0 SLBRMDSBWMD  073H TELNYX LLC 242   2021-03-04   
667-676 1 SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2022-03-14   
667-676 2 SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2022-03-14   
667-676 4 SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2021-05-27   
667-676 6 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-11-21   
667-676 7 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-11-21   
667-676 8 SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2021-07-12   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.