# Company search endpoint returning 416 when items\_per\_page is 1000 **URL:** \ **Category:** API Issues\ **Created:** [August 4, 2025, 2:57pm UTC](http://forum.companieshouse.gov.uk/t/company-search-endpoint-returning-416-when-items-per-page-is-1000/11931 "2025-08-04T14:57:36Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![bill](http://forum.companieshouse.gov.uk/letter_avatar_proxy/v4/letter/b/ac91a4/32.png) [@bill](http://forum.companieshouse.gov.uk/u/bill)\ **Post date:** [August 6, 2025, 11:35am UTC](http://forum.companieshouse.gov.uk/t/company-search-endpoint-returning-416-when-items-per-page-is-1000/11931/2 "2025-08-06T11:35:03Z")
429 code is the Throttle response - Maybe more Throttle responses / checks have been added Interestingly I just checked this API and it always returns items per page as “100” on anything over “100” if you use start\_index=0 and items\_per\_page=1000 you do not get error 416 (But still shows items\_per\_page as 100) but put start\_index=1 and items\_per\_page=1000 and you do get error 416 This was for the query [https://api.company-information.service.gov.uk/search/companies?items\_per\_page=1000&start\_index=0&q=World](https://api.company-information.service.gov.uk/search/companies?items_per_page=1000&start_index=0&q=World) ``` "kind": "search#companies", "page_number": 1, "items_per_page": 100, "total_results": 40841, "start_index": 0 ``` and the same for [https://api.company-information.service.gov.uk/search/companies?items\_per\_page=500&start\_index=1&q=World](https://api.company-information.service.gov.uk/search/companies?items_per_page=500&start_index=1&q=World) ``` "kind": "search#companies", "page_number": 1, "items_per_page": 100, "total_results": 40841, "start_index": 0 ``` So it adjusting my start\_index from 1 to 0 and showing items\_per\_page as 100 --- _[View the full topic](http://forum.companieshouse.gov.uk/t/company-search-endpoint-returning-416-when-items-per-page-is-1000/11931)._