Data Sources
Every data source Firzar uses, its license, and attribution requirements.
Open data, transparently sourced
Firzar only uses data from sources that permit commercial use. We do not use proprietary, non-commercial, or unverified data sources. All attributions required by licenses are displayed on this page.
CC0 / MIT / Public DomainNo attribution required
These sources are in the public domain or use permissive open-source licenses. No attribution is legally required, though we acknowledge them here for transparency.
Country baseline data: ISO codes, capitals, currencies, languages, populations, flags.
Structured country metadata from Wikipedia/Wikimedia: sovereignty status, UN membership, government type, independence date, driving side, area, population.
Exchange rates from 84 central banks covering 201 currencies. Open source, free for commercial use.
Public holidays for 100+ countries.
Travel advisories with risk levels (Levels 1-4).
Government types, economy overviews, transportation data.
Travel health notices, vaccine requirements, malaria risk.
Global airport database: IATA/ICAO codes, coordinates.
Country language data and locale codes.
CC BY-SA 3.0 / CC BY 4.0 / OGLAttribution required
These sources require attribution as a condition of their license. The attribution text is displayed in the website footer and on this page. For CC BY-SA 3.0 sources (Wikivoyage), derivative works must also be licensed under CC BY-SA 3.0.
Travel guide content: things to see, things to do, stay safe, stay healthy, understand, get in, cope, connect, and more for every country.
Attribution: "Wikivoyage, CC BY-SA 3.0"
18 economic indicators: GDP, inflation, unemployment, health expenditure, education.
Attribution: "World Bank Open Data, CC BY 4.0"
Weather data: temperature, humidity, wind, conditions, forecasts.
Attribution: "Open-Meteo, CC BY 4.0"
UK travel advice with detailed safety, health, and entry requirement sections.
Attribution: "UK FCDO, OGL v3.0 (Crown copyright)"
Canadian government travel advisories.
Attribution: "Travel.gc.ca (Canada), OGL Canada 2.0"
Australian government travel advisories with 4-level risk system.
Attribution: "Smartraveller (Australia), CC BY 4.0"
GDP projections, inflation forecasts, government debt data.
Attribution: "IMF DataMapper, CC BY 4.0"
Key economic indicators for OECD member countries.
Attribution: "OECD Data Explorer, CC BY 4.0"
Sources we do NOT use
Firzar intentionally excludes these sources because their licenses do not permit commercial use, require paid agreements, or have unclear licensing terms.
WHO API
CC BY-NC-SA 3.0 — Non-Commercial only. Cannot be used without WHO permission.
Henley Passport Index
Proprietary. Cannot scrape or redistribute without a licensing agreement.
Arton Passport Index
Proprietary. Cannot scrape or redistribute.
Visa Service
Visa requirements change frequently — use official government sources.
Visa Service
Visa requirements change frequently — use official government sources.
TravelTables
Unverified license — do not use until confirmed.
WhereNext Data
Unverified license — do not use until confirmed.
Travel-buddy.ai
Unverified license — do not use until confirmed.
Numbeo
Free tier limited to 15 req/hour. Commercial production use may require paid plan. Evaluating alternatives.
Country Coverage & Tier Model
Our database covers 250 countries, territories, and dependencies. For travel and visa purposes, these are organised into three tiers based on de-facto administration rather than de-jure sovereignty alone.
199
Visa Destinations
193 UN member states + Vatican City, Palestine, Taiwan, Kosovo, Hong Kong, and Macau. Each maintains its own visa regime a traveller must independently satisfy. This is the denominator for passport-power scores.
~50
Territories & Dependencies
Bermuda, Greenland, Puerto Rico, Faroe Islands, etc. Entry is governed by the administering sovereign state. Visa requirements are derived from the mother country with any territory-specific layers noted on the profile.
~5
Disputed / De-facto
Northern Cyprus, Abkhazia, South Ossetia, Transnistria, Western Sahara. Entry is via a patron state; all claimants are shown on the profile. Labelled by de-facto administration, not political endorsement.
195 sovereign states is the internationally recognised figure (193 UN members + 2 observer states). We use this number on country-count surfaces. 199 visa destinations adds the entities with autonomous visa regimes (Taiwan, Kosovo, Hong Kong, Macau) and is used on passport-power and visa surfaces. Travellers holding territorial passport variants (British Overseas Territories, Crown Dependencies, Greenlandic, Aruban, etc.) should select their sovereign state in the passport-power tool.
Political status, UN recognition, entry authority, and entry-route constraints are shown on each country profile. We label entities by de-facto administration for travel practicality while preserving the political facts. No classification constitutes a political endorsement.
Questions about data licensing? open an issue on GitHub.