I’m sorry - there’s no source code here. This is a blog post about Royal Mail postal zones.

thanks & regards,

UK
GB

Europe
AL, AD, AM, AT, AZ, BA, BE, BG, BY, CY, CZ, DE, DK, EE, ES, FI, FO, FR, GI, GL, GR, HU, HR, IS, IE, IT, KZ, LI, LT, LU, LV, MK, MT, PL, PT, SE, SI, SK, SM, RU, UZ, UA, TM, TR, TJ, CH, MD, MC

Rest of World
AX, AF, DZ, AS, AO, AQ, AI, AG, AR, AW, AU, BS, BH, BD, BB, BZ, BJ, BM, BT, BO, BW, BV, BR, IO, BN, BF, BI, KH, CM, CA, CV, KY, CF, TD, CB, CL, CN, CX, CC, CO, KM, CG, CK, CR, CI, CU, DJ, DM, DO, TP, EC, EG, SV, GQ, ER, ET, FK, FJ, FX, GF, PF, TF, GA, GM, GE, GH, GI, GD, GP, GU, GT, GN, GW, GY, HT, HM, HN, HK, IN, ID, IR, IQ, IL, JM, JP, JO, KE, KI, KP, KR, CS, KW, KG, LA, LB, LS, LR, LY, MO, MG, MW, MY, MV, ML, MH, MQ, MR, MU, YT, MX, FM, MN, CS, MS, MA, MZ, MM, NA, NR, NP, NL, AN, NC, NZ, NI, NE, NG, NU, NF, MP, NO, OM, PK, PW, PA, PG, PY, PE, PH, PN, PR, QA, RE, IE, RO, RW, KN, LC, VC, WS, ST, SA, SN, CS, SC, CL, SG, SB, SO, ZA, GS, ES, LK, SH, PM, SD, SR, SJ, SZ, CH, SY, TW, TH, TG, TK, TO, TT, TN, TC, TV, UG, AE, US, UM, UY, VU, VA, VE, VN, VG, VI, WF, EH, YE, YU, ZR, ZM, ZW

Big thank you for your post, saved me a ton of time…