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.

Region: IA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-229 2 Waterloo IA   985E BANDWIDTH.COM CLEC, LLC - IA 635   2015-03-07   
319-229 3 Waterloo IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2014-11-07   
319-229 4 Waterloo IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2014-11-07   
319-229 5 Waterloo IA   985E BANDWIDTH.COM CLEC, LLC - IA 635   2015-03-07   
319-229 6 Waterloo IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2015-05-10   
319-229 7 Waterloo IA   221F ONVOY, LLC - IA 635   2014-11-07   
319-229 8 Waterloo IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2016-06-08   
319-229 9 Waterloo IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635   2014-09-29   
319-230 A Waterloo IA CDRRIADTX9X  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635      
319-231 A Waterloo IA CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-232 A Waterloo IA WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-233 A Waterloo IA WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-234 A Waterloo IA WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-235 A Waterloo IA WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-236 A Waterloo IA WTRLIADTDS1  9631 QWEST CORPORATION 635      
319-237 A Burlington IA BURLIABD2MD  2842 LOCAL TELEPHONE DATA SERVICES CORP. 634      
319-237 0 Burlington IA   2842 LOCAL TELEPHONE DATA SERVICES CORP. 634      
319-237 1 Burlington IA   2842 LOCAL TELEPHONE DATA SERVICES CORP. 634      
319-237 2 Burlington IA   6529 T-MOBILE USA, INC. 634   2011-11-28   
319-237 3 Burlington IA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 634   2008-01-25   
319-237 4 Burlington IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2014-11-30   
319-237 5 Burlington IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2015-03-11   
319-237 6 Burlington IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2015-09-18   
319-237 7 Burlington IA   221F ONVOY, LLC - IA 634   2013-04-04   
319-237 8 Burlington IA   2842 LOCAL TELEPHONE DATA SERVICES CORP. 634      
319-237 9 Burlington IA   073H TELNYX LLC 634   2020-05-25   
319-238 A Oelwein IA CDRRIADTKMD  221F ONVOY, LLC - IA 635      
319-238 0 Oelwein IA   6266 UNITED STATES CELLULAR - IA 635   2014-06-30   
319-238 1 Oelwein IA   6266 UNITED STATES CELLULAR - IA 635   2005-05-14   
319-238 2 Oelwein IA   6266 UNITED STATES CELLULAR - IA 635   2005-04-28   
319-238 3 Oelwein IA   6266 UNITED STATES CELLULAR - IA 635   2007-12-14   
319-238 4 Oelwein IA   221F ONVOY, LLC - IA 635   2019-05-11   
319-238 5 Oelwein IA   6266 UNITED STATES CELLULAR - IA 635   2025-01-15   
319-238 6 Oelwein IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635   2010-04-01   
319-238 7 Oelwein IA   221F ONVOY, LLC - IA 635   2008-03-01   
319-238 8 Oelwein IA   593K MCC TELEPHONY LLC 635   2010-05-09   
319-238 9 Oelwein IA   6266 UNITED STATES CELLULAR - IA 635   2011-02-07   
319-239 A Waterloo IA CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-240 A Waterloo IA CDRRIATS0MD  6266 UNITED STATES CELLULAR - IA 635      
319-241 A Cedar Rapids IA CDRRIAAX7MD  6529 T-MOBILE USA, INC. 635      
319-242 A Cedar Falls IA CDRRIAAB4MD  7421 AT&T - LOCAL 635      
319-242 0 Cedar Falls IA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 635   2017-07-14   
319-242 1 Cedar Falls IA   6266 UNITED STATES CELLULAR - IA 635   2008-09-23   
319-242 2 Cedar Falls IA   6266 UNITED STATES CELLULAR - IA 635   2009-04-04   
319-242 3 Cedar Falls IA   985E BANDWIDTH.COM CLEC, LLC - IA 635   2010-10-08   
319-242 4 Cedar Falls IA   221F ONVOY, LLC - IA 635   2009-03-13   
319-242 5 Cedar Falls IA   985E BANDWIDTH.COM CLEC, LLC - IA 635   2010-07-03   
319-242 6 Cedar Falls IA   985E BANDWIDTH.COM CLEC, LLC - IA 635   2011-06-22   
319-242 7 Cedar Falls IA   221F ONVOY, LLC - IA 635   2008-03-01   
319-242 8 Cedar Falls IA   593K MCC TELEPHONY LLC 635   2010-05-09   
319-242 9 Cedar Falls IA   7421 AT&T - LOCAL 635      
319-243 A Cedar Falls IA CDFLIACODS0  9631 QWEST CORPORATION 635      
319-243 0 Cedar Falls IA   6266 UNITED STATES CELLULAR - IA 635   2014-02-27   
319-243 1 Cedar Falls IA   221F ONVOY, LLC - IA 635   2012-12-13   
319-243 2 Cedar Falls IA   9631 QWEST CORPORATION 635      
319-243 3 Cedar Falls IA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 635   2007-07-02   
319-243 4 Cedar Falls IA   515J IP HORIZON LLC 635   2025-07-25   
319-243 5 Cedar Falls IA   6266 UNITED STATES CELLULAR - IA 635   2012-08-17   
319-243 6 Cedar Falls IA   221F ONVOY, LLC - IA 635   2012-12-13   
319-243 7 Cedar Falls IA   221F ONVOY, LLC - IA 635   2012-12-13   
319-243 8 Cedar Falls IA   6266 UNITED STATES CELLULAR - IA 635   2010-08-06   
319-243 9 Cedar Falls IA   6266 UNITED STATES CELLULAR - IA 635   2014-06-30   
319-244 A Ely IA NLBTIAXO2MD  593K MCC TELEPHONY LLC 635      
319-244 2 Ely IA   544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 635   2018-05-11   
319-244 4 Ely IA   145J TERRA NOVA TELECOM INC. 635   2025-05-24   
319-244 6 Ely IA   516J TON80 COMMUNICATIONS, LLC 635   2022-03-18   
319-244 7 Ely IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635   2022-05-30   
319-244 8 Ely IA   985E BANDWIDTH.COM CLEC, LLC - IA 635   2008-11-29   
319-244 9 Ely IA   593K MCC TELEPHONY LLC 635   2010-05-09   
319-245 A Grundy Center IA GNCTIAXOPS0  1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 635      
319-245 0 Grundy Center IA   6529 T-MOBILE USA, INC. 635   2024-08-15   
319-245 2 Grundy Center IA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 635   2018-03-01   
319-245 3 Grundy Center IA   221F ONVOY, LLC - IA 635   2021-05-07   
319-245 5 Grundy Center IA   544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 635   2018-05-11   
319-245 7 Grundy Center IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635   2017-06-10   
319-245 9 Grundy Center IA   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 635   2015-09-14   
319-246 A Fort Madison IA DVNPIADTGMD  221F ONVOY, LLC - IA 634      
319-246 0 Fort Madison IA   6266 UNITED STATES CELLULAR - IA 634   2020-05-28   
319-246 1 Fort Madison IA   751F MCC TELEPHONY OF IOWA, LLC - IA 634   2010-04-15   
319-246 2 Fort Madison IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2010-07-03   
319-246 3 Fort Madison IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2010-10-08   
319-246 4 Fort Madison IA   221F ONVOY, LLC - IA 634   2012-12-13   
319-246 5 Fort Madison IA   221F ONVOY, LLC - IA 634   2012-12-13   
319-246 6 Fort Madison IA   221F ONVOY, LLC - IA 634   2012-12-13   
319-246 7 Fort Madison IA   221F ONVOY, LLC - IA 634   2008-02-28   
319-246 8 Fort Madison IA   221F ONVOY, LLC - IA 634   2012-12-13   
319-246 9 Fort Madison IA   939H COMMIO, LLC 634   2022-11-13   
319-247 A Cedar Rapids IA CDRRIADTDS0  9631 QWEST CORPORATION 635      
319-248 A Iowa City IA CDRRIADTYZZ  829J PAETEC ITEL, LLC 635      
319-249 A Cedar Rapids IA CDRRIADTX2X  508J CENTURYLINK COMMUNICATIONS, LLC 635      
319-249 0 Cedar Rapids IA   221F ONVOY, LLC - IA 635   2017-06-22   
319-249 1 Cedar Rapids IA   593K MCC TELEPHONY LLC 635   2017-06-23   
319-249 2 Cedar Rapids IA   221F ONVOY, LLC - IA 635   2017-09-18   
319-249 3 Cedar Rapids IA   593K MCC TELEPHONY LLC 635   2017-09-24   
319-249 4 Cedar Rapids IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2017-11-20   
319-249 5 Cedar Rapids IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635   2017-11-25   
319-249 6 Cedar Rapids IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 635   2017-06-29   
319-249 7 Cedar Rapids IA   508J CENTURYLINK COMMUNICATIONS, LLC 635   2017-04-23   
319-249 8 Cedar Rapids IA   6266 UNITED STATES CELLULAR - IA 635   2017-09-13   
319-249 9 Cedar Rapids IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 635   2017-10-23   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.