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| Alaska |
| Residential Energy Services Network | Registry | Web |
| Arizona |
| Arizona Association of Realtors | Registry | Web |
| Phoenix Association of Realtors | Registry | Web |
| Scottsdale Association of Realtors | Registry | Web |
| California |
| Monterey County Association of Realtors | Registry | Web |
| Orange Coast Association of REALTORS | Registry | Web |
| District of Columbia |
| Real Estate Services Providers Council, Inc. | Registry | Web |
| Idaho |
| Idaho Association of Realtors | Registry | Web |
| Illinois |
| American Society of Home Inspectors (ASHI) | Registry | Web |
| Illinois Association of Realtors | Registry | Web |
| Illinois Association of Realtors | Registry | Web |
| Kentucky |
| Kentucky Association of Realtors | Registry | Web |
| Louisiana |
| LSU Real Estate Research Institute | Registry | Web |
| Massachusetts |
| Real Estate Cyberspace Society | Registry | Web |
| Small Property Owners Association | Registry | Web |
| Minnesota |
| International Real Estate Institute | Registry | Web |
| Minnesota Association of Realtors | Registry | Web |
| Missouri |
| Northwest Association of Realtors | Registry | Web |
| New York |
| Greater Capital Association of Realtors | Registry | Web |
| Greater Rochester Association of Realtors | Registry | Web |
| New York Association of Realtors | Registry | Web |
| Pennsylvania |
| East Montgomery Association of Realtors | Registry | Web |
| Philadelphia Association of Realtors | Registry | Web |
| South Carolina |
| Durham Association of Realtors | Registry | Web |
| Texas |
| Houston Association of Realtors | Registry | Web |
| Virginia |
| Northern Virginia Association of Realtors | Registry | Web |
| Portsmouth/Chesapeake Association of Realtors | Registry | Web |
| Tidewater Association of Realtors | Registry | Web |
| Washington |
| National Association of Signing Agents | Registry | Web |
| Wisconsin |
| WRA Wisconsin REALTORS Association | Registry | Web |
| California Association of Realtors | Registry | Web |
| Real Estate information Professionals Association | Registry | Web |