| __oppref | 30 days | Used by OpenAI for storing click identifier to attribute conversions to ChatGPT ads. |
| _fbp | 3 months | Set by Facebook for serving ads on Facebook or related platforms after visiting the website. |
| _fcdscst | session | Set by Full Circle Insights for tracking a visitor session for campaign attribution. |
| _fcdscv | 2 years | Set by Full Circle Insights for storing a visitor ID used for marketing campaign attribution. |
| _gcl_au | 3 months | Set by Google Tag Manager for testing ad efficiency of websites using their services. |
| _mkto_trk | 400 days | Set by Marketo for storing a unique user ID and collecting user activity data. |
| _uetmsclkid | 90 days | Set by Microsoft Advertising for storing the Microsoft Click ID to attribute conversions to ad clicks. |
| _uetmsdns | session | Set by Microsoft Advertising for managing consent preferences and controlling data transmission. |
| _uetsid | 1 day | Set by Microsoft Advertising for tracking visits during a session and improving conversion accuracy. |
| _uetsid_exp | never | Set by Microsoft Advertising for storing the expiration date of the _uetsid cookie. |
| _uetvid | 13 months | Set by Microsoft Advertising for identifying returning visitors and enabling remarketing. |
| _uetvid_exp | never | Set by Microsoft Advertising for storing the expiration date of the _uetvid cookie. |
| _zitok | 1 year | Set by ZoomInfo to store a unique user ID for analytics, lead generation & marketing attribution. |
| audit | 1 year | Used for Demandbase advertising via Magnite cookie sync. |
| bcookie | 1 year | Set by LinkedIn for recognizing browser IDs from LinkedIn share buttons and ad tags. |
| BIGipServer* | session | Set by Marketo for collecting user activity data to provide relevant ads. |
| CMID | 1 year | Used for Demandbase advertising via Index Exchange cookie sync. |
| CMPRO | 90 days | Used for Demandbase advertising via Index Exchange cookie sync. |
| CMPS | 90 days | Used for Demandbase advertising via Index Exchange cookie sync. |
| fr | 3 months | Set by Facebook to show relevant ads by tracking user behavior on sites with the Facebook pixel. |
| IDE | 1 day | Set by DoubleClick to serve targeted ads across the web to users based on previous visits to a site. |
| khaos | 1 year | Used for Demandbase advertising via Magnite cookie sync. |
| metadata_cid | 30 days | Set by Metadata for storing unique campaign ID and conversion tracking purposes. |
| metadata_cid_history | 90 days | Set by Metadata for storing the history of the metadata_cid for any past campaigns. |
| metadata_session_id | session | Set by Metadata to track the number of sessions a specific account has on the site. |
| metadata_visitor_id | 1 year | Set by Metadata to understand how many users from the account are coming on the site. |
| MSPTC | 1 year | Set by Microsoft Advertising for serving relevant ads and measuring campaign effectiveness. |
| pxrc | 90 days | Used for Demandbase analytics and advertising via LiveRamp cookie sync. |
| rlas3 | 1 year | Used for Demandbase analytics and advertising via LiveRamp cookie sync. |
| site_identity | 1 year | Set by Salesloft for tracking website activity to help identify and qualify leads. |
| sliguid | 1 year | Set by Salesloft for tracking website activity to help identify and qualify leads. |
| slireg | 7 days | Set by Salesloft for tracking website activity to help identify and qualify leads. |
| slirequested | 1 year | Set by Salesloft for tracking website activity to help identify and qualify leads. |
| SRM_B | 13 months | Set by Microsoft to identify browsers for ad delivery, campaign tracking, and retargeting. |
| test_cookie | 15 minutes | Set by DoubleClick for determining if the browser supports cookies. |
| tuuid | 2 years | Used for analytics and advertising services provided by Demandbase. |
| tuuid_lu | 2 years | Used for analytics and advertising services provided by Demandbase. |
| tv_UIDM | 2 years | Used for Demandbase advertising via Magnite cookie sync. |
| tvid | 1 year | Used for Demandbase advertising via Magnite cookie sync. |
| utm_campaign | never | Stores UTM data to measure campaign performance and user acquisition sources. |
| utm_content | never | Stores UTM data to measure campaign performance and user acquisition sources. |
| utm_medium | never | Stores UTM data to measure campaign performance and user acquisition sources. |
| utm_source | never | Stores UTM data to measure campaign performance and user acquisition sources. |
| utm_term | never | Stores UTM data to measure campaign performance and user acquisition sources. |
| ziwsSession | session | Set by ZoomInfo to identify a user session for company analytics and lead generation. |
| ziwsSessionId | session | Set by ZoomInfo to store a session ID and track activity for marketing analytics. |
