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
563-230 9 Dyersville IA   1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 634   2016-10-10   
563-231 A Dubuque IA DUBQIAUS1MD  6266 UNITED STATES CELLULAR - IA 634      
563-231 0 Dubuque IA   6266 UNITED STATES CELLULAR - IA 634   2012-11-26   
563-231 1 Dubuque IA   6266 UNITED STATES CELLULAR - IA 634   2014-03-06   
563-231 2 Dubuque IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2014-08-30   
563-231 3 Dubuque IA   751F MCC TELEPHONY OF IOWA, LLC - IA 634   2014-11-14   
563-231 4 Dubuque IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2014-11-29   
563-231 5 Dubuque IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2014-11-29   
563-231 6 Dubuque IA   6266 UNITED STATES CELLULAR - IA 634   2015-01-03   
563-231 7 Dubuque IA   221F ONVOY, LLC - IA 634   2013-09-13   
563-231 8 Dubuque IA   444G AUREON COMMUNICATIONS, LLC 634   2013-12-26   
563-231 9 Dubuque IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2015-07-23   
563-232 A Davenport IA DVNPIAEAEMD  8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 634      
563-232 0 Davenport IA   8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 634   2016-04-03   
563-232 1 Davenport IA   751F MCC TELEPHONY OF IOWA, LLC - IA 634   2016-07-06   
563-232 2 Davenport IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2016-07-15   
563-232 3 Davenport IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2016-06-15   
563-232 4 Davenport IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2016-07-15   
563-232 5 Davenport IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2017-10-26   
563-232 6 Davenport IA   751F MCC TELEPHONY OF IOWA, LLC - IA 634   2017-11-06   
563-232 7 Davenport IA   551G NUSO, LLC 634   2018-03-06   
563-232 8 Davenport IA   751F MCC TELEPHONY OF IOWA, LLC - IA 634   2018-07-19   
563-232 9 Davenport IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 634   2016-11-30   
563-233 A Sumner IA SOLNIAXO2MD  593K MCC TELEPHONY LLC 635      
563-233 2 Sumner IA   145J TERRA NOVA TELECOM INC. 635   2025-07-04   
563-233 3 Sumner IA   544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 635   2018-07-23   
563-233 7 Sumner IA   508J CENTURYLINK COMMUNICATIONS, LLC 635   2017-06-15   
563-233 8 Sumner IA   593K MCC TELEPHONY LLC 635   2010-05-06   
563-234 A De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 0 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 1 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 2 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 3 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 4 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 5 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 6 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 7 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 8 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-234 9 De Witt IA   6266 UNITED STATES CELLULAR - IA 634   2025-05-12   
563-235 A Dubuque IA DVNPIAEAXMD  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 634      
563-235 0 Dubuque IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2016-08-12   
563-235 1 Dubuque IA   221F ONVOY, LLC - IA 634   2016-04-08   
563-235 2 Dubuque IA   221F ONVOY, LLC - IA 634   2016-04-08   
563-235 3 Dubuque IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 634   2016-04-21   
563-235 4 Dubuque IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2015-12-28   
563-235 5 Dubuque IA   5562 METROPCS, INC. 634   2018-06-30   
563-235 6 Dubuque IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2016-06-15   
563-235 7 Dubuque IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 634   2017-05-29   
563-235 8 Dubuque IA   508J CENTURYLINK COMMUNICATIONS, LLC 634   2016-10-05   
563-235 9 Dubuque IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 634   2018-04-13   
563-236 A Andrew IA DVNPIAEA9MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 634      
563-236 2 Andrew IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 634   2018-08-19   
563-236 9 Andrew IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2021-07-30   
563-237 A Fredericksburg IA FRBGIAXORS0  1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 635      
563-237 0 Fredericksburg IA   593K MCC TELEPHONY LLC 635   2010-05-06   
563-237 1 Fredericksburg IA   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 635      
563-237 2 Fredericksburg IA   544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 635   2018-07-23   
563-237 3 Fredericksburg IA   5562 METROPCS, INC. 635   2018-08-03   
563-237 4 Fredericksburg IA   221F ONVOY, LLC - IA 635   2021-05-07   
563-237 5 Fredericksburg IA   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 635      
563-237 6 Fredericksburg IA   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 635      
563-237 7 Fredericksburg IA   508J CENTURYLINK COMMUNICATIONS, LLC 635   2017-06-10   
563-237 8 Fredericksburg IA   221F ONVOY, LLC - IA 635   2021-10-18   
563-237 9 Fredericksburg IA   1170 WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 635      
563-238 A Lawler IA LWLRIAXORS0  1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 635      
563-238 1 Lawler IA   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 635      
563-238 2 Lawler IA   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 635      
563-238 3 Lawler IA   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 635      
563-238 4 Lawler IA   221F ONVOY, LLC - IA 635   2021-10-29   
563-238 5 Lawler IA   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 635      
563-238 6 Lawler IA   429J HAWKEYE INTERCONNECT COMPANY - IA 635   2020-08-31   
563-238 7 Lawler IA   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 635      
563-238 8 Lawler IA   1178 WINDSTREAM IOWA COMMUNICATIONS, INC. 635      
563-239 A Dubuque IA DVNPIAEA8MD  751F MCC TELEPHONY OF IOWA, LLC - IA 634      
563-239 0 Dubuque IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 634   2018-07-11   
563-239 1 Dubuque IA   751F MCC TELEPHONY OF IOWA, LLC - IA 634   2016-11-20   
563-239 2 Dubuque IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 634   2017-01-21   
563-239 3 Dubuque IA   221F ONVOY, LLC - IA 634   2019-09-19   
563-239 4 Dubuque IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2017-09-22   
563-239 5 Dubuque IA   221F ONVOY, LLC - IA 634   2018-01-15   
563-239 6 Dubuque IA   221F ONVOY, LLC - IA 634   2018-01-15   
563-239 7 Dubuque IA   6529 T-MOBILE USA, INC. 634   2018-04-09   
563-239 8 Dubuque IA   6529 T-MOBILE USA, INC. 634   2018-04-09   
563-239 9 Dubuque IA   695G IMON COMMUNICATIONS, LLC - IA 634   2018-03-18   
563-240 A LaMotte IA DVNPIAEA9MD  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 634      
563-240 0 LaMotte IA   145J TERRA NOVA TELECOM INC. 634   2025-05-31   
563-240 2 LaMotte IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 634   2018-08-19   
563-240 9 LaMotte IA   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2021-02-26   
563-241 A Clinton IA CLTNIACODS0  9631 QWEST CORPORATION 634      
563-241 0 Clinton IA   9631 QWEST CORPORATION 634      
563-241 1 Clinton IA   9631 QWEST CORPORATION 634      
563-241 2 Clinton IA   5562 METROPCS, INC. 634   2011-03-08   
563-241 3 Clinton IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2011-05-13   
563-241 4 Clinton IA   9631 QWEST CORPORATION 634      
563-241 5 Clinton IA   985E BANDWIDTH.COM CLEC, LLC - IA 634   2010-07-03   
563-241 6 Clinton IA   6529 T-MOBILE USA, INC. 634   2011-09-15   
563-241 7 Clinton IA   221F ONVOY, LLC - IA 634   2011-11-29   
563-241 8 Clinton IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 634   2011-06-20   
563-241 9 Clinton IA   9631 QWEST CORPORATION 634      
563-242 A Clinton IA CLTNIACODS0  9631 QWEST CORPORATION 634      

<< 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: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.