Baselayer Business Index

Ada Services Corporation

Business profileC corporationLinked registrations

Public business information with links to supporting state records. Data as of October 16, 2026.

Business profile

Legal business name
Ada Services Corporation
Alternative and DBA names
Amca Corporation
Amca Mortgage Corporation
Assurance Mortgage Corporation
Show all 6 names ↓Assurance Mortgage Corporation of America
H & R Block Mortgage Corporation,
Option One Mortgage Services Inc.
Entity type
C corporation
Original incorporation date
May 21, 1991
Time in business
35 years and 4 months
Jurisdiction count
47

All known addresses

  • 7595 Irvine Center Dr Ste 100, Irvine, CA 92618

    Listed in Massachusetts

  • 32208 PO Box, Kansas City, MO 64171

    Listed in Alabama, Texas

  • 3800 N Central Ave Ste 460, Phoenix, AZ 85012

    Listed in Arizona

View all 18 addresses ↓

  • 20 Blanchard Rd, Burlington, MA 01803

    Listed in Arkansas, Maryland

  • 1950 W Corporate Way, Anaheim, CA 92801

    Listed in California, Tennessee, West Virginia

  • 6531 Irvine Center Dr, Irvine, CA 92618

    Listed in Colorado, Connecticut, Iowa, North Carolina, North Dakota, South Dakota

  • 3 Burlington Woods Dr, Burlington, MA 01803

    Listed in Florida, Hawaii, Idaho

  • 3 Burlington, Boston, MA 02110

    Listed in Georgia, Indiana, Louisiana, New Hampshire, Vermont

  • 6501 Irvine Center Dr, Irvine, CA 92618

    Listed in Kentucky, Ohio

  • 101 State House Sta, Augusta, ME 04333

    Listed in Maine

  • 30600 Telegraph Rd, Franklin, MI 48025

    Listed in Michigan

  • 8927 Lorraine Rd Ste 204-A, Gulfport, MS 39503

    Listed in Mississippi

  • 8583 Irvine Center Dr Ste 25, Irvine, CA 92618

    Listed in Missouri

  • 7595 Irvine Center Dr Ste 120, Irvine, CA 92618

    Listed in Montana

  • 155 Federal St Ste 700, Boston, MA 02110

    Listed in New Mexico

  • 185 Technology Dr, Irvine, CA 92618

    Listed in New York

  • 3 Ada, Irvine, CA 92618

    Listed in Oregon

  • 7595 Irvine Center Dr, Irvine, CA 92618

    Listed in Rhode Island

Registered states

View linked public registration records.

AlabamaOption One Mortgage Services, Inc.Foreign registrationView registration →AlaskaOption One Mortgage Services, Inc.Foreign registrationView registration →ArizonaForeign registrationView registration →ArkansasOption One Mortgage Services, Inc.Foreign registrationView registration →CaliforniaForeign registrationView registration →ColoradoOption One Mortgage Services, Inc.Foreign registrationView registration →ConnecticutOption One Mortgage Services Inc.Foreign registrationView registration →DelawareOption One Mortgage Services, Inc.Foreign registrationView registration →FloridaOption One Mortgage Services, Inc.Foreign registrationView registration →GeorgiaOption One Mortgage Services, Inc.Foreign registrationView registration →
Show all 48 registrations ↓
HawaiiH&R Block Mortgage CorporationForeign registrationView registration →IdahoOption One Mortgage Services, Inc.Foreign registrationView registration →IllinoisOption One Mortgage Services, Inc.Foreign registrationView registration →IndianaOption One Mortgage Services, Inc.Foreign registrationView registration →IowaOption One Mortgage Services, Inc.Foreign registrationView registration →IowaOption One Mortgage Services, Inc.Foreign registrationView registration →KansasOption One Mortgage Services, Inc.Foreign registrationView registration →KentuckyAssurance Mortgage Corporation of AmericaForeign registrationView registration →LouisianaOption One Mortgage Services, Inc.Foreign registrationView registration →MaineOption One Mortgage Services, Inc.Foreign registrationView registration →MarylandH&R Block Mortgage CorporationForeign registrationView registration →MassachusettsDomestic registrationView registration →MichiganOption One Mortgage Services, Inc.Foreign registrationView registration →MississippiOption One Mortgage Services, Inc.Foreign registrationView registration →MissouriForeign registrationView registration →MontanaForeign registrationView registration →NebraskaOption One Mortgage Services, Inc.Foreign registrationView registration →NevadaOption One Mortgage Services, Inc.Foreign registrationView registration →New HampshireOption One Mortgage Services, Inc.Foreign registrationView registration →New MexicoForeign registrationView registration →New YorkForeign registrationView registration →North CarolinaH&R Block Mortgage CorporationForeign registrationView registration →North DakotaOption One Mortgage Services, Inc.Foreign registrationView registration →OhioH&R Block Mortgage CorporationForeign registrationView registration →OklahomaH&R Block Mortgage CorporationForeign registrationView registration →OregonOption One Mortgage Services, Inc.Foreign registrationView registration →PennsylvaniaForeign registrationView registration →Rhode IslandForeign registrationView registration →South CarolinaOption One Mortgage Services, Inc.Foreign registrationView registration →South DakotaOption One Mortgage Services, Inc.Foreign registrationView registration →TennesseeForeign registrationView registration →TexasForeign registrationView registration →UtahForeign registrationView registration →VermontOption One Mortgage Services, Inc.Foreign registrationView registration →WashingtonOption One Mortgage Services, Inc.Foreign registrationView registration →West VirginiaForeign registrationView registration →WisconsinOption One Mortgage Services, Inc.Foreign registrationView registration →WyomingOption One Mortgage Services, Inc.Foreign registrationView registration →

Source: public state registration records. Missing values are not a negative finding.

Full business report $5