Database updated: 2025/05/09
Total count of active websites in our database using the .arpa TLD.
The number of unique contact (emails & phones) points extracted from sites
Indicates the international presence of these sites across .arpa countries
Sum of host records found across domains.
Count of unique IP addresses serving the websites with .arpa
A metric that estimates network influence and trust, based on the link structure of domains using 7:55 am TLD
The average PageRank score reflecting the SEO authority of websites with the .arpa TLD
CSV datasets with filters by countries, techologies, or TLD.
Full access for 12 months
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| Language | Share in Country (%) |
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The .arpa TLD is a specialized domain used for technical infrastructure purposes on the internet. Established as a crucial element for managing internet resources, .arpa domains are not meant for general commercial websites. Instead, they are used for operational matters such as mapping IP addresses to domain names and managing other essential internet functions. As an integral part of the Domain Name System (DNS), .arpa websites are pivotal in ensuring the smooth operation and stability of online communications and transactions, supporting a range of services that underpin the global internet structure.
Introduced in the early days of the internet, the .arpa TLD stands for Address and Routing Parameter Area. It was originally created in 1985 by the Internet Engineering Task Force (IETF) for the purpose of transitioning the ARPANET to the domain name system we use today. Over time, .arpa domains have evolved to support various essential DNS infrastructure tasks. Despite not being as visible as commercial sites, .arpa websites play a key role in processes like reverse DNS lookups and ENUM telephone number mapping, maintaining the reliable functionality of online networks worldwide.
Businesses generally do not choose .arpa domains as part of their online presence due to their specific and limited purpose. Unlike generic top-level domains, .arpa websites are strictly for technical infrastructure, used predominantly by organizations that manage and maintain internet protocols and standards. Companies involved in providing core internet services or research may engage with .arpa domains indirectly. Their choice reflects a pivotal role in safeguarding internet reliability and supporting technologies that form the backbone of digital communication adopted globally by numerous businesses and sectors.
Comprehensive domain database with detailed information
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