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Sources

Each record's source_id points to one of these, so you can see who published it, under what licence, and when we fetched it.

Sources, publishers, licences and retrieval dates
Source Publisher Licence Retrieved Link
Airportssrc_01M3SHTN5SCQX1FK045ZS8MD3T OurAirports public-domain 30 Sep 2026 Original
Countries, currencies and calling codessrc_01M3SHTMGAF90K217X4X4AT70J Open Knowledge Foundation (country-codes) PDDL-1.0 30 Sep 2026 Original
Electoral wards of Nigeriasrc_01M3MZBEMJESP6K20ESZ7AWAH4 Independent National Electoral Commission public-facts 6 Sep 2026 Original
Federal constituencies of Nigeriasrc_01M3SJTAYD5Z9CR5V5VCGPCRWG Independent National Electoral Commission public-facts 30 Sep 2026 Original
Geopolitical zones of Nigeriasrc_01M3MZBDTJV8GPWP6EZGB6DMP8 Federal Government of Nigeria public-facts 6 Sep 2026 Original
GRID3 NGA Health Facilities v2.0src_01M3SFVPAM84KT3EW8SWRHKX4V GRID3 Nigeria CC-BY-4.0 30 Sep 2026 Original
GRID3 NGA Health Facilities v3.0src_01M3MZBMC2EFQ2G39M0BP94559 GRID3 Nigeria CC-BY-4.0 6 Sep 2026 Original
Local government areas of Nigeriasrc_01M3MZBE2TYZ54M5788NA0F09V Independent National Electoral Commission public-facts 6 Sep 2026 Original
Nigerian banks and bank codessrc_01M3SCB7DDFFWH3R72459JNKJR Paystack public-facts 30 Sep 2026 Original
Nigerian mobile number prefixessrc_01M3SCB7P21BGCN694WX0T3NDH Nigerian Communications Commission public-facts 30 Sep 2026 Original
Nigerian public holidayssrc_01M3SCB7VJ2FWYS2D0X73S75K7 Federal Ministry of Interior public-facts 30 Sep 2026 Original
OCHA COD-AB Nigeria admin 2 boundariessrc_01M3MZCB71RWZW7SPN140N8QN5 OCHA / Office of the Surveyor General of the Federation CC-BY-IGO 6 Sep 2026 Original
OCHA COD-PS Nigeria subnational populationsrc_01M3MZCAK7ZNZ7E8JQTEMYQ2NV OCHA / National Population Commission CC-BY 6 Sep 2026 Original
Polling units of Nigeriasrc_01M3SK55R6XVM37VFVSJW93B40 Independent National Electoral Commission public-facts 30 Sep 2026 Original
Senatorial districts of Nigeriasrc_01M3SJTAHBH079NQEDNYG62R9B Independent National Electoral Commission public-facts 30 Sep 2026 Original
States of Nigeriasrc_01M3MZBDY2QZF6NJ6D0TVR8XNG Independent National Electoral Commission public-facts 6 Sep 2026 Original
Tertiary institutions of Nigeriasrc_01M3MZBKP74CKB0KNW3TP53Q36 timileyinpelumi/Tertiary-Institutions-In-Nigeria public-facts 28 Sep 2026 Original

Where each dataset comes from

Health facilities
GRID3 NGA Health Facilities v3.0, and v2.0 for the 13 states v3.0 does not cover. CC BY 4.0, attributed to GRID3 Nigeria.
LGA boundaries
OCHA COD-AB Nigeria, administrative level 2, CC BY IGO.
Population
OCHA COD-PS Nigeria, CC BY.
Wards and LGAs
INEC public records.
Tertiary institutions
A compiled list of universities, polytechnics and colleges, verified by trueset.
Banks
Paystack's public list of banks and bank codes, checked against the Central Bank of Nigeria's lists of licensed institutions.
Phone prefixes
The NCC's mobile number allocation table.
Public holidays
The Public Holidays Act and Ministry of Interior announcements.
Electoral areas and polling units
INEC's polling unit register.
Countries
The country-codes dataset of ISO country, currency and calling codes. Public domain.
Airports
OurAirports. Public domain.