IP address space, country by country.
What the regional internet registries have allocated in each country, which networks hold the most of it, and every range DB-IP places there.
Short answer
241 countries and territories hold RIR allocations. Pick one for its totals, largest networks and a downloadable list of ranges.
AfghanistanÅland IslandsAlbaniaAlgeriaAmerican SamoaAndorraAngolaAnguillaAntarcticaAntigua & BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBoliviaBosnia & HerzegovinaBotswanaBrazilBritish Indian Ocean TerritoryBritish Virgin IslandsBruneiBulgariaBurkina FasoBurundiCambodiaCameroonCanadaCape VerdeCaribbean NetherlandsCayman IslandsCentral African RepublicChadChileChinaColombiaComorosCongo - BrazzavilleCongo - KinshasaCook IslandsCosta RicaCôte d’IvoireCroatiaCubaCuraçaoCyprusCzechiaDenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEswatiniEthiopiaEuropean UnionFalkland IslandsFaroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuamGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHondurasHong Kong SAR ChinaHungaryIcelandIndiaIndonesiaIranIraqIrelandIsle of ManIsraelItalyJamaicaJapanJerseyJordanKazakhstanKenyaKiribatiKuwaitKyrgyzstanLaosLatviaLebanonLesothoLiberiaLibyaLiechtensteinLithuaniaLuxembourgMacao SAR ChinaMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMartiniqueMauritaniaMauritiusMayotteMexicoMicronesiaMoldovaMonacoMongoliaMontenegroMontserratMoroccoMozambiqueMyanmar (Burma)NamibiaNauruNepalNetherlandsNew CaledoniaNew ZealandNicaraguaNigerNigeriaNiueNorfolk IslandNorth KoreaNorth MacedoniaNorthern Mariana IslandsNorwayOmanPakistanPalauPalestinian TerritoriesPanamaPapua New GuineaParaguayPeruPhilippinesPolandPortugalPuerto RicoQatarRéunionRomaniaRussiaRwandaSamoaSan MarinoSão Tomé & PríncipeSaudi ArabiaSenegalSerbiaSeychellesSierra LeoneSingaporeSint MaartenSlovakiaSloveniaSolomon IslandsSomaliaSouth AfricaSouth Georgia & South Sandwich IslandsSouth KoreaSouth SudanSpainSri LankaSt. BarthélemySt. HelenaSt. Kitts & NevisSt. LuciaSt. MartinSt. Pierre & MiquelonSt. Vincent & GrenadinesSudanSurinameSwedenSwitzerlandSyriaTaiwanTajikistanTanzaniaThailandTimor-LesteTogoTokelauTongaTrinidad & TobagoTunisiaTürkiyeTurkmenistanTurks & Caicos IslandsTuvaluU.S. Virgin IslandsUgandaUkraineUnited Arab EmiratesUnited KingdomUnited StatesUruguayUzbekistanVanuatuVatican CityVenezuelaVietnamWallis & FutunaYemenZambiaZimbabwe