Contact Initiative Domain Map — Complete Overview
Complete Domain Directory for K–12 Schools, Colleges, and Universities
location_citySchools
schoolStudents
cast_for_educationTeachers
badgePrincipals
family_restroomParents / Guardians
account_balanceAcademies (Charter / Private)
verified_userK–12 Verification
schoolStudents
personFaculty
co_presentLecturers
verified_userCollege Verification
schoolStudents
personFaculty (Ranked / Tenure-Track)
co_presentLecturers (Non-Tenure Track)
verified_userUniversity Verification
account_balanceDepartment / Administration
groupsTechnology Personnel
verified_userVerification Services
computerMI Sandbox (System-Wide)
For testing and development only
shield_personGlobal Verification Endpoints
mailCommunication Aliases (Global Patterns)
publicWeb / Infrastructure Roots
Domain Glossary
What each domain does, grouped to match the map above.
K–12 Schools
Standardized web-hosting root for elementary school sites and content management.
MI sandbox mirror of the elementary school domain pattern, for testing only.
Verified alias domain for enrolled high school students.
MI sandbox mirror of the high school student alias pattern.
Verified alias domain for enrolled middle school students.
MI sandbox mirror of the middle school student alias pattern.
Query-response endpoint confirming a teacher’s current, attested role.
MI sandbox verification endpoint for testing automated vendor and technology lookups.
Verified communication alias for classroom teachers.
Verified alias for a school or district’s operational technology staff.
District-level alias for operational and administrative staff coordinating across school sites.
Verified communication alias for a school’s principal.
MI sandbox mirror of the principal alias pattern.
Retired-never-recycled guardian alias used for verified guardian-school communication.
MI sandbox mirror of the guardian alias pattern.
Verified alias domain for charter and private academy communications.
MI sandbox mirror of the academy alias pattern.
Query-response endpoint confirming a school’s identity and current status — not a browsable directory.
Colleges (Teaching / Community)
Verified alias domain for enrolled college students.
MI sandbox mirror of the college student alias pattern.
Verified alias for a college’s general teaching faculty.
MI sandbox mirror of the college faculty alias pattern.
Verified alias for an individually attested college professor.
MI sandbox domain for testing cross-institution professor lookups.
Verified alias for a non-tenure-track college lecturer.
MI sandbox mirror of the college lecturer alias pattern.
Query-response endpoint confirming a college’s identity and current status.
Universities (Research / Doctoral)
Verified alias domain for enrolled university students.
MI sandbox mirror of the university student alias pattern.
Verified alias for ranked, tenure-track university faculty.
MI sandbox mirror of the university professor alias pattern.
Verified alias for a non-tenure-track university lecturer.
MI sandbox mirror of the university lecturer alias pattern.
Query-response endpoint confirming a university’s identity and current status.
Department of Technology
Root administrative domain for the Department of Technology.
Query-response endpoint confirming the Department of Technology’s identity and its personnel.
MI sandbox mirror of the technology-personnel alias pattern.
Cross-Category Services
Global verified alias pattern for students, used across all institution types.
Global communication alias pattern for teachers across all institution types.
Global communication alias pattern for professors across all institution types.
Global communication alias pattern for lecturers across all institution types.
Global communication alias pattern for general faculty across all institution types.
K–12 National Numbering Plan & Parent Recycling Protocol
Legacy Five-Tier Area Code Structure (Pre-V5 Draft)
account_balanceInstitutions & Agencies
Assigned to the institution itself (district, state, or federal agency), not an individual. Local districts use their 7-digit NCES Federal District ID; agencies use a 2-digit Federal State ID. This tier explicitly includes the Department of Technology, utilizing the 111 prefix.
cast_for_educationClassroom Teachers & Principals
Classroom teachers and principals, split across @teachers.email and @principals.email, built from a state ID plus the educator’s state-issued credential number.
groupsClassified & Operational Staff
IT, facilities, human resources, and paraprofessional personnel — e.g. @lausd.schools.email.
schoolK–12 Students (Primary Pool)
A unified student block, backed by six expansion pools, for a total capacity of roughly 80,000,000 identifiers against about 54.6 million enrolled U.S. students.
Expansion pools
computerReserved — MI Research & Development
A non-colliding sandbox that mirrors the production tiers, so developers can test MI-driven tools without any possibility of touching live school communication.
family_restroomParent Identity Recycling Protocol
Parents and guardians bring their own verified mobile number as their handle. This is a human-facing mail identity for school parents. Once their child graduates high school, the email is recycled for future use by other parents — unless the parent still has a younger, not-yet-school-aged child, in which case the address is retained for that pending enrollment.