> ## Documentation Index > Fetch the complete documentation index at: https://aisa.one/docs/llms.txt > Use this file to discover all available pages before exploring further. # Backlinks History > This endpoint will provide you with historical backlinks data back to the beginning of 2019. ## OpenAPI ````yaml openapi/dataforseo.json POST /dataforseo/backlinks/history/live openapi: 3.0.3 info: title: DataForSEO API version: 1.0.0 description: DataForSEO API endpoints exposed through the AIsa unified gateway. servers: - url: https://api.aisa.one/apis/v1 security: - BearerAuth: [] paths: /dataforseo/backlinks/history/live: post: summary: Backlinks History description: >- This endpoint will provide you with historical backlinks data back to the beginning of 2019. You can receive the number of backlinks a given domain had in a specific time period, the number of new & lost backlinks, referring domains, and more. operationId: post_dataforseo_backlinks_history_live requestBody: required: true content: application/json: schema: type: object properties: target: type: string description: >- domain required field a domain should be specified without https:// and www. date_from: type: string description: >- starting date of the time range optional field minimum value 2019-01-01 if you don’t specify this field, the minimum value will be used by default date format: "yyyy-mm-dd" example: "2019-01-15" date_to: type: string description: >- ending date of the time range optional field if you don’t specify this field, the today’s date will be used by default date format: "yyyy-mm-dd" example: "2019-01-15" rank_scale: type: string description: >- defines the scale used for calculating and displaying the rank, domain_from_rank, and page_from_rank values optional field you can use this parameter to choose whether rank values are presented on a 0–100 or 0–1000 scale possible values: one_hundred — rank values are displayed on a 0–100 scale one_thousand — rank values are displayed on a 0–1000 scale default value: one_thousand learn more about how this parameter works and how ranking metrics are calculated in this Help Center article tag: type: string description: >- user-defined task identifier optional field the character limit is 255 you can use this parameter to identify the task and match it with the result you will find the specified tag value in the data object of the response required: - target responses: '200': description: Successful response content: application/json: schema: type: object properties: version: type: string description: the current version of the API status_code: type: integer description: >- general status code you can find the full list of the response codes here Note: we strongly recommend designing a necessary system for handling related exceptional or error conditions status_message: type: string description: >- general informational message you can find the full list of general informational messages here time: type: string description: execution time, seconds cost: type: number description: total tasks cost, USD tasks_count: type: integer description: the number of tasks in the tasks array tasks_error: type: integer description: >- the number of tasks in the tasks array returned with an error tasks: type: array items: type: string description: array of tasks tasks.id: type: string description: >- task identifier unique task identifier in our system in the UUID format tasks.status_code: type: integer description: >- status code of the task generated by DataForSEO; can be within the following range: 10000-60000 you can find the full list of the response codes here tasks.status_message: type: string description: >- informational message of the task you can find the full list of general informational messages here tasks.time: type: string description: execution time, seconds tasks.cost: type: number description: cost of the task, USD tasks.result_count: type: integer description: number of elements in the result array tasks.path: type: array items: type: string description: URL path tasks.data: type: object description: >- contains the same parameters that you specified in the POST request tasks.result: type: array items: type: string description: array of results tasks.result.target: type: string description: target from the POST array tasks.result.date_from: type: string description: >- starting date of the time range in the UTC format: “yyyy-mm-dd” example: 2019-01-01 tasks.result.date_to: type: string description: >- ending date of the time range in the UTC format: "yyyy-mm-dd" example: "2019-01-15" tasks.result.items_count: type: integer description: the number of results returned in the items array tasks.result.items: type: array items: type: string description: >- contains historical backlink data for the specified domain the data is provided month-by-month; the metrics are aggregated according to the backlinks the specified domain had on the first day of each given month tasks.result.items.type: type: string description: type of element = ‘backlinks_history’ tasks.result.items.date: type: string description: >- date and time when the data for the target was stored in the UTC format: “yyyy-mm-dd hh-mm-ss +00:00” example: 2019-11-15 12:57:46 +00:00 tasks.result.items.rank: type: integer description: >- domain rank on the given date learn more about the metric and how it is calculated in this help center article tasks.result.items.backlinks: type: integer description: number of backlinks tasks.result.items.new_backlinks: type: integer description: >- number of new backlinks for the target data is provided based in a comparison with the previous period Note: this data is available from May 2021; if the date range specified in the POST request precedes May 2021, the field will equal 0 tasks.result.items.lost_backlinks: type: integer description: >- number of lost backlinks for the target data is provided based in a comparison with the previous period Note: this data is available from May 2021; if the date range specified in the POST request precedes May 2021, the field will equal 0 tasks.result.items.new_referring_domains: type: integer description: >- number of new referring domains for the target data is provided based in a comparison with the previous period Note: this data is available from May 2021; if the date range specified in the POST request precedes May 2021, the field will equal 0 tasks.result.items.lost_referring_domains: type: integer description: >- number of lost referring domains for the target data is provided based in a comparison with the previous period Note: this data is available from May 2021; if the date range specified in the POST request precedes May 2021, the field will equal 0 tasks.result.items.crawled_pages: type: integer description: number of crawled pages for the target tasks.result.items.info: type: object description: information about the target tasks.result.items.info.server: type: string description: server tasks.result.items.info.cms: type: string description: content management system tasks.result.items.info.platform_type: type: array items: type: string description: platform type tasks.result.items.info.ip_address: type: string description: IP address of the target tasks.result.items.info.country: type: string description: >- country code that the target domain is determined to belong to tasks.result.items.info.is_ip: type: boolean description: >- indicates if the target is IP if true, the domain, subdomain or webpage functions as an IP address and does not have a domain name tasks.result.items.info.target_spam_score: type: integer description: >- spam score of the target if the target is a domain/subdomain, this fields indicates the average spam score of all pages of that domain/subdomain; learn more about how the metric is calculated on this help center page tasks.result.items.internal_links_count: type: integer description: >- number of internal links calculated as the sum of internal links on the pages of the specified target tasks.result.items.external_links_count: type: integer description: >- number of external links on the page calculated as the sum of external links on the pages of the specified target tasks.result.items.broken_backlinks: type: integer description: >- number of broken backlinks number of broken backlinks pointing to the target tasks.result.items.broken_pages: type: integer description: >- number of broken pages number of pages that receive backlinks but respond with 4xx or 5xx status codes tasks.result.items.referring_domains: type: integer description: >- number of referring domains referring domains include subdomains that are counted as separate domains for this metric tasks.result.items.referring_domains_nofollow: type: integer description: >- number of domains pointing at least one nofollow link to the target tasks.result.items.referring_main_domains: type: integer description: number of referring main domains tasks.result.items.referring_main_domains_nofollow: type: integer description: >- number of main domains pointing at least one nofollow link to the target tasks.result.items.referring_ips: type: integer description: >- number of referring IP addresses number of IP addresses pointing to this page tasks.result.items.referring_subnets: type: integer description: number of referring subnetworks tasks.result.items.referring_pages: type: integer description: number of pages pointing to the target tasks.result.items.referring_links_tld: type: object description: >- top-level domains of the referring links contains top-level domains and referring link count per each tasks.result.items.referring_links_types: type: object description: >- types of referring links indicates the types of the referring links and link count per each type possible values: anchor, image, link, meta, canonical, alternate, redirect tasks.result.items.referring_links_attributes: type: object description: >- link attributes of the referring links indicates link attributes of the referring links and link count per each attribute tasks.result.items.referring_links_platform_types: type: object description: >- types of referring platforms indicates referring platform types and and link count per each platform possible values: cms, blogs, ecommerce, message-boards, wikis, news, organization tasks.result.items.referring_links_semantic_locations: type: object description: >- semantic locations of the referring links indicates semantic elements in HTML where the referring links are located and link count per each semantic location you can get the full list of semantic elements here examples: article, section, summary tasks.result.items.referring_links_countries: type: object description: >- ISO country codes of the referring links indicates ISO country codes of the domains where the referring links are located and the link count per each country tasks.result.items.referring_pages_nofollow: type: integer description: >- number of referring pages pointing at least one nofollow link to the target '400': description: Bad request '401': description: Unauthorized '429': description: Rate limit exceeded '500': description: Internal server error components: securitySchemes: BearerAuth: type: http scheme: bearer ````