Beginning in June 2025, 6sense began a monthly refresh of 6sense’s Master Company Data (MCD), driving big gains in accuracy, coverage, and usability across the platform. These monthly data refreshes offer improved and more accurate prospecting with cleaner and more complete account profiles, more reliable enrichment and segmentation, smarter ABM and SI workflows with fewer gaps and less noise, and improved (and higher quality) matches. Users should expect to see a meaningful change in data each month.
Refresh notes below will be presented with the most recent updates first.
October ‘25 Release Notes
Major callouts for this release:
Country-level accounts:
~3.4M accounts created
~2.4M junk/dead domain accounts deleted
+1M net new country-level accounts
Total: ~74.9M accounts
Freshness and accuracy:
~15M accounts updated, with key impacted fields including:
Name
Address
Funding
Revenue & Employee Count (including ranges)
Phone
Regional Focus:
Customers across NA, EMEA, APAC, and LATAM may expect to see an average ~1.7% lift in historic match rate.
Net new accounts added over the past month:
~29K in NA
~416K in EMEA
~448K in APAC
~120K in LATAM
September ‘25 Release Notes
Major callouts for this release:
Country-level accounts:
~435K created
~345K deleted
+90K net new country-level accounts
Total now approaching 73.9M accounts
Freshness and accuracy:
~4M accounts updated, improving freshness and accuracy for the following key fields:
Name
Address
Funding
Revenue & Employee Count (including ranges)
Phone
Regional focus:
NA, EMEA, and APAC based customers may expect to see an average ~1% lift in historic match rate, while the lift in LATAM is close to 0.5%.
Net new accounts added over the past month:
~34K in NA
~30K in EMEA
~2.5K in APAC
~24.5K in LATAM
August ‘25 Release Notes
Major callouts for this release:
Country-level accounts:
~2.3M created
~1.5M deleted
~800K net new country-level accounts
Total now stands at 73.8M accounts
Global-level accounts:
~1.87M created
~1.35M deleted
~520K net new global-level accounts
Total now stands at 68.7M accounts
This refresh goes beyond adding new accounts. It significantly improves data quality. Approximately 20M accounts were updated to enhance freshness and accuracy.
Key impacted fields are:
Name
Address
Funding
Revenue & Employee Count (including ranges)
Phone
Industry Codes (SIC, NAICS)
Social URLs (LinkedIn, X, Facebook, YouTube)
Year founded
Verified data updates (average core firmographic accuracy is 90%)
Global-level impact: 87,830 (an increase of 21K from last month)
Country-level impact: 966,000 (an increase of 250K from last month)
EMEA
Country-level accounts: approximately 17.7M (an increase of ~2% since last month)
Customers can expect a 2.2% improvement in match rates based on the last two months of SI/ABM list uploads and ABM CRM syncs.
APAC
Country-level accounts: approximately 16M (an increase of ~1% since last month)
Customers can expect a 1.2% improvement in match rates based on the last two months of SI/ABM list uploads and ABM CRM syncs.
LATAM
Country-level accounts: approximately 3.5M (an increase of ~4.5% since last month)
Customers can expect a 1.2% improvement in match rates based on the last two months of SI/ABM list uploads and ABM CRM syncs.
July ‘25 Release Notes
Here are a few noteworthy callouts from this refresh:
The volume of MCD is now 73.01M country-level accounts.
New accounts added: ~1.26M
Deleted (junk/dead domains): ~635K
Net new accounts added: ~630K
EMEA expansion:
Added ~2.25M country-level EMEA accounts, increasing coverage in the region by over 15%.
Boosted Sales Intelligence performance:
Based on historical list uploads, customers can expect up to 3.5% higher match rates.
Removed ~200K junk or outdated accounts previously receiving false-positive matches, enhancing overall data integrity.
Verified data (top 100k accounts) firmographic accuracy improvements:
Updated core firmographics for 66.3K global-level accounts.
Updated core firmographics for 710K country-level accounts.
This refresh had a substantial impact on freshness and accuracy, with updates to ~17M accounts.
Key impacted fields are:
Funding
Revenue & Employee Count (including ranges)
Phone, Name, Address
Social URLs (LinkedIn, X, Facebook, YouTube)
Company Type (Public, Private, etc.)
June ‘25 Release Notes
Here are a few noteworthy callouts from this refresh:
Global-level account growth and updates:
Increased coverage to 67.97M global accounts.
Updated 49.8M existing global accounts.
Deleted 0.85M dead/junk global accounts.
Country-level account growth and updates:
Increased coverage to 72.38M country-level accounts.
Added 5.3M net new country-level accounts (all with domains).
Updated 56M existing country-level accounts.
Deleted 1.17M dead/junk country-level accounts.
Verified data (top 100K accounts) firmographic accuracy improvements:
Updated core firmographics for 34K global-level accounts.
Updated core firmographics for 325K country-level accounts.
Headcount accuracy:
Our headcount (range) accuracy now stands at about 99.9% for the impacted set of accounts.
Impacted 14.7M global and 15.07M country-level accounts.
92K accounts impacted, with accuracy improvements to 99.3%.
LinkedIn social URL accuracy:
Our LinkedIn social URL accuracy now stands at about 99.7% for the impacted set of accounts.
Impacted 14.7M global-level accounts.
Impacted 15.07M country-level accounts.
86K accounts impacted, improving LinkedIn URL accuracy to 93.4%.
Funding data updates:
Updated/added data for 103K global accounts.
Updated/added data for 188K country-level accounts.
"Company type" field improvements:
Updated/added data for 5.69M global accounts.
Updated/added data for 6.2M country-level accounts.
Improved business rules and logic.