"900 number" meaning in English

{
  "etymology_text": "In the original North American Numbering Plan, telephone numbers with the 800 area code were designated as toll-free, whereby the recipient of the call assumed all associated charges. Subsequently, telephone companies introduced 900 numbers, enabling the subscriber to impose additional fees on callers.",
  "forms": [
    {
      "form": "900 numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "900 number (plural 900 numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Canadian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Telephony",
          "orig": "en:Telephony",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A telephone number for which an extra charge is assessed, part of which is returned to the owner of the number."
      ],
      "id": "en-900_number-en-noun-EKpcfDVh",
      "links": [
        [
          "Canada",
          "Canada"
        ],
        [
          "US",
          "American English"
        ],
        [
          "telephone number",
          "telephone number"
        ],
        [
          "extra",
          "extra"
        ],
        [
          "charge",
          "charge"
        ],
        [
          "assessed",
          "assessed"
        ],
        [
          "owner",
          "owner"
        ],
        [
          "number",
          "number"
        ]
      ],
      "raw_glosses": [
        "(Canada, US) A telephone number for which an extra charge is assessed, part of which is returned to the owner of the number."
      ],
      "related": [
        {
          "word": "1-900"
        },
        {
          "word": "800 number"
        },
        {
          "word": "premium-rate telephone number"
        }
      ],
      "tags": [
        "Canada",
        "US"
      ],
      "wikipedia": [
        "North American Numbering Plan"
      ]
    }
  ],
  "word": "900 number"
}

{
  "etymology_text": "In the original North American Numbering Plan, telephone numbers with the 800 area code were designated as toll-free, whereby the recipient of the call assumed all associated charges. Subsequently, telephone companies introduced 900 numbers, enabling the subscriber to impose additional fees on callers.",
  "forms": [
    {
      "form": "900 numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "900 number (plural 900 numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "1-900"
    },
    {
      "word": "800 number"
    },
    {
      "word": "premium-rate telephone number"
    }
  ],
  "senses": [
    {
      "categories": [
        "American English",
        "Canadian English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms spelled with numbers",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Telephony"
      ],
      "glosses": [
        "A telephone number for which an extra charge is assessed, part of which is returned to the owner of the number."
      ],
      "links": [
        [
          "Canada",
          "Canada"
        ],
        [
          "US",
          "American English"
        ],
        [
          "telephone number",
          "telephone number"
        ],
        [
          "extra",
          "extra"
        ],
        [
          "charge",
          "charge"
        ],
        [
          "assessed",
          "assessed"
        ],
        [
          "owner",
          "owner"
        ],
        [
          "number",
          "number"
        ]
      ],
      "raw_glosses": [
        "(Canada, US) A telephone number for which an extra charge is assessed, part of which is returned to the owner of the number."
      ],
      "tags": [
        "Canada",
        "US"
      ],
      "wikipedia": [
        "North American Numbering Plan"
      ]
    }
  ],
  "word": "900 number"
}