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| Destination | Prefix | 1st/sub Interval | Intrastate | Intrastate |
|---|---|---|---|---|
| Irving, TX | 1972653 | 6/6 sec | $0.00550 | $0.00550 |
| Irving, TX | 1972655 | 6/6 sec | $0.00546 | $0.00610 |
| Irving, TX | 1972657 | 6/6 sec | $0.00540 | $0.00546 |
| Irving, TX | 1972659 | 6/6 sec | $0.00516 | $0.00544 |
| Irving, TX | 1972714 | 6/6 sec | $0.00526 | $0.00544 |
| Irving, TX | 1972717 | 6/6 sec | $0.00544 | $0.00544 |
| Irving, TX | 1972719 | 6/6 sec | $0.00550 | $0.00566 |
| Irving, TX | 1972721 | 6/6 sec | $0.00522 | $0.00522 |
| Irving, TX | 1972746 | 6/6 sec | $0.00688 | $0.00602 |
| Irving, TX | 1972753 | 6/6 sec | $0.00544 | $0.00544 |
| Irving, TX | 1972756 | 6/6 sec | $0.00530 | $0.00544 |
| Irving, TX | 1972785 | 6/6 sec | $0.00544 | $0.00544 |
| Irving, TX | 1972786 | 6/6 sec | $0.00250 | $0.00316 |
| Irving, TX | 1972790 | 6/6 sec | $0.00544 | $0.00560 |
| Irving, TX | 1972793 | 6/6 sec | $0.00304 | $0.00340 |
| Irving, TX | 1972812 | 6/6 sec | $0.00996 | $0.01022 |
| Irving, TX | 1972815 | 6/6 sec | $0.00316 | $0.00354 |
| Irving, TX | 1972819 | 6/6 sec | $0.00296 | $0.00380 |
| Irving, TX | 1972821 | 6/6 sec | $0.00630 | $0.00630 |
| Irving, TX | 1972823 | 6/6 sec | $0.01012 | $0.01024 |
| Irving, TX | 1972827 | 6/6 sec | $0.00272 | $0.00644 |
| Irving, TX | 1972870 | 6/6 sec | $0.00702 | $0.00650 |
| Irving, TX | 1972871 | 6/6 sec | $0.00700 | $0.00636 |
| Irving, TX | 1972887 | 6/6 sec | $0.00550 | $0.00550 |
| Irving, TX | 1972891 | 6/6 sec | $0.00334 | $0.00340 |
| Irving, TX | 1972893 | 6/6 sec | $0.00624 | $0.00614 |
| Irving, TX | 1972894 | 6/6 sec | $0.00250 | $0.00316 |
| Irving, TX | 1972915 | 6/6 sec | $0.00550 | $0.00568 |
| Irving, TX | 1972929 | 6/6 sec | $0.00544 | $0.00544 |
| Irving, TX | 1972970 | 6/6 sec | $0.00340 | $0.00340 |
| Irving, TX | 1972983 | 6/6 sec | $0.00700 | $0.00636 |
| Irving, TX | 1972986 | 6/6 sec | $0.00544 | $0.00540 |
| Irving, TX | 1972999 | 6/6 sec | $0.00494 | $0.00496 |
| Irvington, IL | 1618249 | 6/6 sec | $0.02336 | $0.02336 |
| Irvington, KY | 1270547 | 6/6 sec | $0.03872 | $0.03728 |
| Irvington, KY | 1270668 | 6/6 sec | $0.03990 | $0.03872 |
| Irvington, KY | 1270750 | 6/6 sec | $0.00286 | $0.00286 |
| Irvington, KY | 1270863 | 6/6 sec | $0.04388 | $0.04388 |
| Irvington, KY | 1270945 | 6/6 sec | $0.00234 | $0.00228 |
| Irvington, KY | 1270980 | 6/6 sec | $0.00234 | $0.00234 |
| Irvington, VA | 1804438 | 6/6 sec | $0.00734 | $0.00772 |
| Irvington-St Elmo, AL | 1251306 | 6/6 sec | $0.00918 | $0.00932 |
| Irvington-St Elmo, AL | 1251957 | 6/6 sec | $0.01504 | $0.01386 |
| Irwin, IA | 1712782 | 6/6 sec | $0.06828 | $0.06650 |
| Irwin, ID | 1208270 | 6/6 sec | $0.00200 | $0.00200 |
| Irwin, ID | 1208483 | 6/6 sec | $0.05426 | $0.04094 |
| Irwin, ID | 1208499 | 6/6 sec | $0.00568 | $0.00568 |
| Irwinton, GA | 1478943 | 6/6 sec | $0.03378 | $0.03388 |
| Irwinton, GA | 1478946 | 6/6 sec | $0.03386 | $0.03348 |
| Irwinton, GA | 1478979 | 6/6 sec | $0.00328 | $0.00306 |
| Irwinville, GA | 1229831 | 6/6 sec | $0.01704 | $0.01522 |
| Isabel, KS | 1620739 | 6/6 sec | $0.04146 | $0.04228 |
| Isabel, SD | 1605466 | 6/6 sec | $0.06650 | $0.06650 |
| Isabela, PR | 1787609 | 6/6 sec | $0.00442 | $0.00442 |
| Isabela, PR | 1787830 | 6/6 sec | $0.01538 | $0.01538 |
| Isabela, PR | 1787872 | 6/6 sec | $0.01562 | $0.01562 |
| Isabella, MN | 1218323 | 6/6 sec | $0.03234 | $0.03140 |
| Isabella, MN | 1218432 | 6/6 sec | $0.00136 | $0.00128 |
| Ishpeming, MI | 1906204 | 6/6 sec | $0.00164 | $0.00204 |
| Ishpeming, MI | 1906464 | 6/6 sec | $0.00340 | $0.00340 |
| Ishpeming, MI | 1906485 | 6/6 sec | $0.00536 | $0.00536 |
| Ishpeming, MI | 1906486 | 6/6 sec | $0.00536 | $0.00536 |
| Ishpeming, MI | 1906514 | 6/6 sec | $0.00160 | $0.00160 |
| Ishpeming, MI | 1906702 | 6/6 sec | $0.00536 | $0.00536 |
| Iskut, BC | 1250234 | 6/6 sec | $0.00478 | $0.00478 |
| Isla Verde, PR | 1787253 | 6/6 sec | $0.01562 | $0.01562 |
| Isla Verde, PR | 1787791 | 6/6 sec | $0.01538 | $0.01538 |
| Isla Verde, PR | 1787985 | 6/6 sec | $0.01710 | $0.01710 |
| Island Falls, ME | 1207463 | 6/6 sec | $0.02122 | $0.02122 |
| Island Harbour, NL | 1709863 | 6/6 sec | $0.00410 | $0.00410 |
| Island Lake, MB | 1204450 | 6/6 sec | $0.00434 | $0.00434 |
| Island Lake, MB | 1204456 | 6/6 sec | $0.00434 | $0.00434 |
| Island Lake, MB | 1204457 | 6/6 sec | $0.00418 | $0.00418 |
| Island Lake, MB | 1204462 | 6/6 sec | $0.00434 | $0.00434 |
| Island Lake, MB | 1204980 | 6/6 sec | $0.00434 | $0.00434 |
| Island Park, ID | 1208558 | 6/6 sec | $0.04800 | $0.03022 |
| Island Pond, VT | 1802386 | 6/6 sec | $0.00646 | $0.00670 |
| Island Pond, VT | 1802515 | 6/6 sec | $0.00954 | $0.00954 |
| Island Pond, VT | 1802723 | 6/6 sec | $0.00864 | $0.00772 |
| Island, KY | 1270486 | 6/6 sec | $0.00536 | $0.00536 |
| Island, KY | 1270673 | 6/6 sec | $0.00430 | $0.00410 |
| Islay, AB | 1780744 | 6/6 sec | $0.00434 | $0.00434 |
| Isle au Haut, ME | 1207335 | 6/6 sec | $0.06100 | $0.06100 |
| Isle aux Morts, NL | 1709698 | 6/6 sec | $0.00434 | $0.00434 |
| Isle la Motte, VT | 1802928 | 6/6 sec | $0.01978 | $0.01954 |
| Isle of Palms, SC | 1843242 | 6/6 sec | $0.00984 | $0.01248 |
| Isle of Palms, SC | 1843256 | 6/6 sec | $0.00954 | $0.01090 |
| Isle of Palms, SC | 1843885 | 6/6 sec | $0.00750 | $0.00710 |
| Isle of Palms, SC | 1843886 | 6/6 sec | $0.00536 | $0.00536 |
| Isle, MN | 1320537 | 6/6 sec | $0.01422 | $0.01136 |
| Isle, MN | 1320676 | 6/6 sec | $0.02084 | $0.02410 |
| Isleton, CA | 1916623 | 6/6 sec | $0.00426 | $0.00450 |
| Isleton, CA | 1916777 | 6/6 sec | $0.00850 | $0.00860 |
| Islip, NY | 1631210 | 6/6 sec | $0.00286 | $0.00794 |
| Islip, NY | 1631224 | 6/6 sec | $0.00368 | $0.00682 |
| Islip, NY | 1631277 | 6/6 sec | $0.00590 | $0.00590 |
| Islip, NY | 1631446 | 6/6 sec | $0.00330 | $0.00684 |
| Islip, NY | 1631481 | 6/6 sec | $0.00286 | $0.00884 |
| Islip, NY | 1631581 | 6/6 sec | $0.00614 | $0.00660 |
| Islip, NY | 1631650 | 6/6 sec | $0.00612 | $0.00728 |