 the country codes given in the leftmost column share the same first digit; then subsequent columns give the second digit in ascending order.0123456789+1: US, CA (see NANP)+1 242: BS+1 246: BB+1 264: AI+1 268: AG+1 284: VG+1 340: VI+1 345: KY+1 441: BM+1 473: GD+1 649: TC+1 664: MS+1 670: MP+1 671: GU+1 684: AS+1 721: SX[1]+1 758: LC+1 767: DM+1 784: VC+1 787: PR+1 809: DO+1 829: DO+1 849: DO+1 868: TT+1 869: KN+1 876: JM+1 939: PR+20: EG+210: --+211: SS+212: MA, EH+213: DZ+214: --+215: --+216: TN+217: --+218: LY+219: --+220: GM+221: SN+222: MR+223: ML+224: GN+225: CI+226: BF+227: NE+228: TG+229: BJ+230: MU+231: LR+232: SL+233: GH+234: NG+235: TD+236: CF+237: CM+238: CV+239: ST+240: GQ+241: GA+242: CG+243: CD+244: AO+245: GW+246: IO+247: AC+248: SC+249: SD+250: RW+251: ET+252: SO, QS