.partners - Law firms, real estate agencies, investment firms, accounting firms, nonprofit organizations

.parts - Appliance wholesalers & service, tool rentals & service businesses, auto/boat/heavy equipment

             businesses

.party - nightclubs and social gatherings

.pay - electronic payments

.pet - animals and pets

.pharmacy - pharmacies

.phone - telephone-related businesses

.photo - photography and photo-sharing

.photography - Professional photographers, camera and equipment retailers, photo studios & photography
                         schools, wedding and specialty photographers, anyone who wants to share photos online

.photos - Professional photographers, camera and equipment retailers, photo studios & photography
                schools, wedding and specialty photographers, anyone who wants to share photos online

.physio - physical therapists

.pics - photography and photo-sharing

.pictures - Professional photographers, camera and equipment retailers, photo studios &
                  photography schools, wedding  and specialty photographers, anyone who wants
                  to share photos online

.pid - personal identification

.pink - those who like the color pink

.pizza - Pizzerias, take & bake pizza shops, Italian or Greek restaurants, pizza brands
             found in grocery stores

.place - Airline-related products or services, travel agencies, resources & services, travel
              writers & bloggers, tourist attractions, hotels, hostels, B&Bs, lodging

.plumbing - Plumbers & plumbing repair businesses, plumbing departments within home supply
                   stores, contractors/subcontractors, DIYers

.plus - Consumer commodity stores & sites, clothing (plus, big & tall), service-based businesses,
           any entity wanting to show their competitive advantage

.porn - adult entertainment (pornography)

.post - postal services

.press - publishing and journalism

.pro - professions/professionals

.productions - Advertising/Marketing/PR/Design agencies, media buying/production companies
                       (digital & traditional), video production services, anyone in the film industry

.prof - Professors, teachers and learning

.promo - advertising

.properties - Real estate brokers/agents, residential/Commercial land developers, property
                    (condo/apartment) managers, home builders, mortgage companies

.pub - Pubs, bars & nightclubs, burger joints, breweries & taphouses, beer distributors,
          restaurant & bar suppliers, publications