.fail - Online meme aggregators, humor websites, video sites

.faith - religion and churches

.family - Family-focused travel sites, blogs about family-friendly activities & games, family
              history sites, photo sites, obstetricians & family practice doctors

.fan - Fan sites, current events & gossip sites, sport blogs and forums, personal & business
          sites about niche topics

.fans - general

.farm - Real estate brokers/agents, farming services & equipment dealers, farmers & ranchers,
            property managers, health food distributors, crypto farmers

.fashion - clothing industry

.feedback - feedback and reviews

.film - films

.final - final versions of anything

.finance - Investment services, banks & financial institutes, credit counselors & financial planners,
                 accounting firms, lenders

.financial - Investment services, banks & financial institutions, credit counselors & financial planners,
                  accounting firms, lenders

.fish - Seafood markets, restaurants & suppliers, sport fishing & fly fishing enthusiasts, fishing gear,
          tackle, & product manufacturers, travel outfitters & fishing guide companies, aquariums, pet &
          fish supply stores, marine biology programs & conservation organizations

.fishing - fishing businesses, sports, and interests

.fit - Fitness and exercise

.fitness - Gyms, athletic clubs & family health organizations, personal trainers, weight loss, health &
               wellness clinics, health & exercise blogs, fitness competition & events companies

.flights - Airline-related products or services, helicopter rides, skydiving, & hang gliding, travel
              agencies & travel services, private pilots, airport transportation

.florist - Florists, flower delivery services, floral designers, flower seed suppliers

.flowers - florists and gardens

.fly - travel

.foo - web development

.football - Professional & amateur football & soccer teams, football clothing, gear & fan merchandise,
           football equipment manufacturers, football coaches & players

.forsale - Individual real estate brokers and brokerages, wholesalers and retailers across many product
                categories, discount, flash sale and deal websites, auction sites and individuals selling
                items they no longer need

.forum - forums

.foundation - Charitable organizations, public school foundations, other philanthropic organizations &
             foundations

.free - sales

.fund - Investment services, banks & financial institutions, credit counselors & financial planners,
            lenders

.furniture - Home décor and furnishing stores, department stores, home designers, vintage stores,
            antique dealers

.fyi - "for your information"