- 5050Climate.org – A non-profit focused on achieving climate balance through advocacy, education, and sustainable initiatives. Visit 5050Climate.org
- 505RCT.org – Represents a historical reenactment group dedicated to preserving the history of the 505th Parachute Infantry Regiment. Visit 505RCT.org
- 506Infantry.org – A site dedicated to veterans of the 506th Infantry Regiment, providing resources, reunion info, and historical documentation. Visit 506Infantry.org
- 508FI.org – Focuses on financial independence strategies, offering resources and forums for personal finance education. Visit 508FI.org
- 508th.org – Honors the 508th Parachute Infantry Regiment with historical archives, veteran stories, and reunion updates. Visit 508th.org
- 509thGeronimo.org – A veterans’ group for the 509th Parachute Infantry Regiment, featuring historical content and reunion information. Visit 509thGeronimo.org
- 50Books.org – Promotes literacy by encouraging people to read and share books, hosting book clubs and reading challenges. Visit 50Books.org
- 50Cities-50Traces.org – An art project capturing cultural traces of 50 cities worldwide to showcase global diversity. Visit 50Cities-50Traces.org
- 50ClubGalvestonCounty.org – A social club in Galveston County that organizes events and activities to foster community engagement. Visit 50ClubGalvestonCounty.org
- 50Dollars.org – Focuses on microfinance, offering small loans to entrepreneurs in developing countries to start businesses. Visit 50Dollars.org
- 50ForFreedom.org – An advocacy group dedicated to eradicating modern slavery, campaigning for better laws and support for victims. Visit 50ForFreedom.org
- 50ish.org – A lifestyle blog that offers advice, stories, and support for people navigating life in their fifties. Visit 50ish.org
- 50Miles.org – Organizes charity walks and runs to raise funds for various causes, promoting fitness and community participation. Visit 50Miles.org
- 50NorthSpatial.org – Provides GIS (Geographic Information Systems) services and solutions, with a focus on spatial data analysis. Visit 50NorthSpatial.org
- 50Over50MN.org – Celebrates the achievements of individuals over 50 who are making significant contributions to their communities in Minnesota. Visit 50Over50MN.org
- 50PlusMilfs.org – Features content and discussions geared towards mature audiences, focusing on lifestyle and entertainment for older women.
- 50Reefs.org – An initiative aimed at protecting the world’s coral reefs by identifying and preserving the most resilient reef systems. Visit 50Reefs.org
- 50ShadesOfBrown.org – A platform that discusses diversity and representation issues, focusing on people of color in various sectors. Visit 50ShadesOfBrown.org
- 50YearsLater.org – A historical site that examines changes in society and culture 50 years past major historical events. Visit 50YearsLater.org
- 511.org – Provides traffic and transportation information to help commuters and travelers in specific regions navigate more easily. Visit 511.org
- 511ContraCosta.org – Offers traffic and transit resources for Contra Costa County, including biking, walking, and public transport advice. Visit 511ContraCosta.org
- 511IA.org – Provides real-time traffic and road condition updates for Iowa, helping drivers navigate effectively and safely. Visit 511IA.org
- 511LA.org – A resource for Louisiana drivers, offering traffic alerts, travel times, and roadwork updates to improve commuting. Visit 511LA.org
- 511NY.org – New York’s transportation information service, providing traffic updates, public transit schedules, and carpool options. Visit 511NY.org
- 511Virginia.org – Delivers traffic and travel information in Virginia, helping motorists avoid delays and plan routes efficiently. Visit 511Virginia.org
- 512Children.org – Focuses on children’s welfare and education, providing support and programs for underprivileged children. Visit 512Children.org
- 512FIS.org – Represents a fighter interceptor squadron, providing a community for veterans and enthusiasts with historical documentation. Visit 512FIS.org
- 513Repeater.org – A site for amateur radio enthusiasts, featuring information on repeater technology and community events. Visit 513Repeater.org
- 516Arts.org – A contemporary art museum that promotes innovative art exhibitions and provides educational programs. Visit 516Arts.org
- 516Missions.org – An organization that supports global missions, providing aid and support for international humanitarian projects. Visit 516Missions.org
- 516Now.org – Engages in immediate charitable efforts, providing quick response to natural disasters and crisis situations worldwide. Visit 516Now.org
- 517Prct.org – A paratrooper community site, dedicated to the history and brotherhood of the 517th Parachute Regimental Combat Team. Visit 517Prct.org
- 51Kdy.org – Offers a platform for knowledge dissemination and educational resources, focusing on professional development. Visit 51Kdy.org
- 51Moorgate.org – A site detailing the development of a building project at 51 Moorgate, focusing on architectural and environmental sustainability. Visit 51Moorgate.org
- 51Sec.org – A cybersecurity resource providing tools, news, and insights to protect against online threats and enhance IT security. Visit 51Sec.org
- 526Bet.org – An online betting platform offering sports betting, with a focus on responsible gaming and secure betting environments. Visit 526Bet.org
- 529K12Facts.org – Provides information about 529 savings plans specifically tailored for K-12 education expenses, helping parents plan financially. Visit 529K12Facts.org
- 529PrepaidTuition.org – Offers information on prepaid tuition plans that allow parents to pay for college tuition at current rates for future education. Visit 529PrepaidTuition.org
- 52G-52HPilots.org – A community for pilots of the 52G and 52H aircraft models, sharing experiences, tips, and maintenance advice. Visit 52G-52HPilots.org
- 52J.org – Provides Jewish educational programs and community engagement opportunities to foster Jewish culture and learning. Visit 52J.org
- 52Wochen.org – A lifestyle and productivity blog offering weekly challenges and tips to help readers make the most of each week of the year. Visit 52Wochen.org
- 530Cannabis.org – A cannabis dispensary providing information on medical and recreational marijuana, focusing on health benefits and legal compliance. Visit 530Cannabis.org
- 54000Doctors.org – An advocacy group focused on healthcare reform, aiming to increase the number of doctors and improve medical services in underserved areas. Visit 54000Doctors.org
- 540GentrificationROC.org – A community organization addressing the impacts of gentrification in Rochester, offering resources and support for affected residents. Visit 540GentrificationROC.org
- 54DewaPoker.org – An online platform for poker enthusiasts, offering games, tournaments, and tips for improving poker skills. Visit 54DewaPoker.org
- 55537.org – Provides disaster relief and emergency services, coordinating efforts and resources to assist in crisis situations. Visit 55537.org
- 55WA.org – A wildlife association dedicated to the conservation and study of wildlife, offering educational programs and conservation initiatives. Visit 55WA.org
- 56113.org – A non-profit organization focusing on community development and social services, providing support and resources to improve community well-being. Visit 56113.org
- 56701.org – A municipal website offering residents of the 56701 area information on local services, events, and government initiatives. Visit 56701.org
- 5678HDAT.org – Specializes in high-definition audio and theater systems, providing reviews, setup guides, and expert advice. Visit 5678HDAT.org
- 56Bhog.org – Promotes cultural and religious understanding by sharing information on Sikh traditions and community events. Visit 56Bhog.org
- 56MusicFix.org – A music festival organization that promotes local bands and artists through events and community engagements. Visit 56MusicFix.org
- 57357.org – A children’s cancer hospital foundation, dedicated to funding cancer research and providing care for pediatric cancer patients. Visit 57357.org
- 57North.org – A collaborative workspace for tech startups and entrepreneurs, offering resources, networking opportunities, and development tools. Visit 57North.org
- 57PDM.org – A professional development management organization that offers courses, workshops, and certifications for career advancement. Visit 57PDM.org
- 57thFighterGroup.org – Honors the history and service of the 57th Fighter Group with reunions, historical archives, and veteran stories. Visit 57thFighterGroup.org
- 57thStreetMeeting.org – A religious and community service organization providing spiritual guidance and community outreach programs. Visit 57thStreetMeeting.org
- 587888.org – Offers support and resources for mental health, specializing in crisis intervention and psychological support services. Visit 587888.org
- 58MH.org – A mental health nonprofit that focuses on awareness campaigns, support services, and advocacy for mental health improvement. Visit 58MH.org
- 58Watt.org – Focuses on energy conservation and renewable energy projects, providing resources and advocacy for greener energy solutions. Visit 58Watt.org
- 59Rivoli.org – An art collective based in Paris, known for its public exhibitions and artist residencies in a reclaimed urban space. Visit 59Rivoli.org
- 5A.org – An organization dedicated to addiction recovery, providing support, resources, and community programs for those struggling with addiction. Visit 5A.org
- 5Acres.org – A child and family services agency that offers therapeutic and foster care services to support and strengthen families. Visit 5Acres.org
- 5Aldia.org – Focuses on promoting healthy eating habits by encouraging consumption of five portions of fruits and vegetables a day. Visit 5Aldia.org
- 5As.org – Provides resources and advocacy for animal welfare, promoting ethical treatment of animals and supporting animal rights legislation. Visit 5As.org
- 5BBC.org – A bicycle club in New York City offering organized bike tours, safety workshops, and social events for cycling enthusiasts. Visit 5BBC.org
- 5Blog.org – A blogging platform that offers insights, tips, and discussions on various topics including technology, lifestyle, and business. Visit 5Blog.org
- 5BreadsAnd2Fish.org – A nonprofit organization that provides food assistance and community support services to those in need. Visit 5BreadsAnd2Fish.org
- 5CitiesSoftball.org – Organizes softball leagues and tournaments for various age groups in five cities, promoting sportsmanship and community involvement. Visit 5CitiesSoftball.org
- 5Core.org – A technology firm specializing in audio equipment, offering a range of products from speakers to professional audio systems. Visit 5Core.org
- 5CR.org – A conservation group focused on restoring and protecting critical habitats and endangered species through community-led initiatives. Visit 5CR.org
- 5DDS.org – A dental professional organization offering resources, continuing education, and networking opportunities for dentists. Visit 5DDS.org
- 5Dingen.org – A Dutch initiative that challenges people to make small, meaningful changes in their daily lives to promote well-being and sustainability. Visit 5Dingen.org
- 5DollarFriday.org – Encourages charitable giving by prompting users to donate $5 on Fridays to different causes and charities each week. Visit 5DollarFriday.org
- 5EAcademy.org – Provides educational programs focused on STEM fields, offering courses and workshops to inspire and educate students. Visit 5EAcademy.org
- 5ForTheFight.org – A campaign to fund cancer research by encouraging people to donate $5 towards finding a cure. Visit 5ForTheFight.org
- 5G-Acia.org – An alliance focused on the industrial application of 5G technology, promoting standards and use cases for industry 4.0. Visit 5G-Acia.org
- 5G-Berlin.org – A hub for 5G innovation and testing, facilitating the development and implementation of 5G technologies in Berlin. Visit 5GBerlin.org
- 5GAmericas.org – Advocates for the advancement and smooth deployment of 5G technology across the Americas, providing resources and information on 5G networks. Visit 5GAmericas.org
- 5GBarcelona.org – A project aimed at transforming Barcelona into a 5G digital hub, fostering innovation and attracting technology investment. Visit 5GBarcelona.org
- 5GNR.org – Focuses on the development and promotion of the 5G New Radio standards, providing technical resources and industry updates. Visit 5GNR.org
- 5GWeek.org – An event platform dedicated to hosting a week-long series of conferences and workshops on 5G technology and its applications. Visit 5GWeek.org
- 5July.org – A community organization that coordinates annual celebrations and events for Independence Day in local neighborhoods. Visit 5July.org
- 5KEvents.org – Specializes in organizing 5K runs and walks, promoting community health and fitness through sponsored sporting events. Visit 5KEvents.org
- 5KForFarmland.org – A charity race that raises funds to support farmland conservation efforts, encouraging community participation and awareness. Visit 5KForFarmland.org
- 5MinuteFinance.org – Provides quick, accessible financial education through short lessons and tips, aimed at improving personal finance understanding. Visit 5MinuteFinance.org
- 5MPlaceWorks.org – A consultancy that specializes in urban planning and community development, helping cities and neighborhoods thrive through strategic planning. Visit 5MPlaceWorks.org
- 5PointCU.org – A credit union offering financial services including loans, savings accounts, and financial planning to its members. Visit 5PointCU.org
- 5PointsCC.org – A cultural center that enriches its community through arts programming, educational initiatives, and cultural events. Visit 5PointsCC.org
- 5RCT.org – Represents a historical regiment, preserving the history and traditions of the 5th Regimental Combat Team with reunions and educational content. Visit 5RCT.org
- 5SmallLoaves.org – An organization that works to bridge cultural divides through dialogue, education, and collaborative community projects. Visit 5SmallLoaves.org
- 5StarDeals.org – An online marketplace offering discounted products and services, focusing on delivering quality and value to consumers. Visit 5StarDeals.org
- 5StarHost.org – Provides web hosting services with a focus on reliability and customer support, catering to businesses and personal sites. Visit 5StarHost.org
- 5StarKidsCamp.org – A summer camp that offers a range of activities designed to develop skills and confidence in children through outdoor and educational experiences. Visit 5StarKidsCamp.org
- 5StarVeteransCenter.org – A non-profit dedicated to supporting veterans in their transition to civilian life, offering housing, counseling, and employment services. Visit 5StarVeteransCenter.org
- 5thAge.org – Focuses on issues related to aging, offering resources, research, and support for the elderly and their caregivers. Visit 5thAge.org
- 5thAvenue.org – Promotes businesses and cultural events along 5th Avenue, enhancing the commercial and cultural vitality of the area. Visit 5thAvenue.org
- 5thAveSeniors.org – A senior center offering programs and services that promote the health, independence, and social engagement of older adults. Visit 5thAveSeniors.org
- 5thBCVA.org – A veterans association for the 5th Battalion, preserving history, facilitating reunions, and providing support to veterans. Visit 5thBCVA.org
- 5thBox.org – An innovative logistics company that simplifies shipping and delivery processes with advanced technology solutions. Visit 5thBox.org