EPSG:1211

DATUM["NAD83_Federal_Base_Network",
    SPHEROID["GRS 1980",6378137,298.257222101,
        AUTHORITY["EPSG","7019"]],
    AUTHORITY["EPSG","1211"]]

DATUM["NAD83 (Federal Base Network)",
    ELLIPSOID["GRS 1980",6378137,298.257222101,
        LENGTHUNIT["metre",1]],
    ID["EPSG",1211]]

DATUM["NAD_1983_(Federal_Base_Network)",
    SPHEROID["GRS_1980",6378137.0,298.257222101]]

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeodeticReferenceFrame",
    "name": "NAD83 (Federal Base Network)",
    "ellipsoid": {
        "name": "GRS 1980",
        "semi_major_axis": 6378137,
        "inverse_flattening": 298.257222101
    },
    "scope": "Geodesy.",
    "area": "American Samoa - Tutuila, Aunu'u, Ofu, Olesega, Ta'u and Rose islands - onshore. Guam - onshore. Northern Mariana Islands - onshore. Puerto Rico - onshore. United States (USA) - CONUS - Alabama; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming - onshore plus Gulf of Mexico offshore continental shelf (GoM OCS). US Virgin Islands - onshore.",
    "bbox": {
        "south_latitude": -14.59,
        "west_longitude": 144.58,
        "north_latitude": 49.38,
        "east_longitude": -64.51
    },
    "id": {
        "authority": "EPSG",
        "code": 1211
    }
}