Internet Domains – Country-Code for Bulgaria On the World Wide Web, many national sites use a country-code top-level domain (ccTLD). What is the official two-letter website code used for Bulgaria?

Introduction / Context:
This question checks your knowledge of Internet addressing, specifically country-code top-level domains (ccTLDs). Every recognized country or territory typically has a two-letter code that appears at the end of domain names, helping users identify the origin or focus of a website (for example, .in for India, .jp for Japan).

Given Data / Assumptions:

• The focus is the official ccTLD for Bulgaria.
• Options contain two-letter codes, but not all are valid or assigned to Bulgaria.
• We are referring to standardized ISO-3166-based Internet codes used in DNS.

Concept / Approach:
Country-code top-level domains are derived from ISO 3166-1 alpha-2 country codes. Bulgaria’s ISO code is BG, and accordingly its Internet domain is .bg. Many Bulgarian institutions, companies, and government entities use this suffix to signify their national association online.

Step-by-Step Solution:

Verification / Alternative check:
A quick check of official Bulgarian government or university domains shows the .bg ending (for example, government portals and academic institutions), confirming that BG is the correct code used on the web for Bulgaria.

Why Other Options Are Wrong:

• BU: Not a current ISO 3166-1 country code; not used as a ccTLD.
• BR: Assigned to Brazil (.br), not Bulgaria.
• BL: Mapped to Saint Barthélemy (.bl) and not generally used; certainly not for Bulgaria.

Common Pitfalls:
Confusing vehicle country codes or old abbreviations with modern Internet ccTLDs; also assuming that every two-letter combination is valid. Only ISO-approved codes are used in the DNS root as ccTLDs.

Final Answer:
BG