Core Twelve's tech stack
What does Core Twelve use?
Core Twelve (core12.com) uses at least 11 tools we can see from public records, including Vercel for hosting, Microsoft 365 for email and documents, Google Analytics for analytics and Mailchimp for marketing. Last checked .
- Industry
- Marketing and Advertising
- Size
- 11–50 employees
- Based in
- Chicago, United States
- Founded
- 1998
- Company page
- Tools found
- 11
- Categories
- 8
- Layers
- 5 of 5
- Last checked
- Oct 2026
Core Twelve's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
3 tools, where the bytes are served from
Hosting & Cloud
CDN & Edge
Application
1 tool, what the product is built with
Media & UI
Data & Observability
2 tools, what they measure and store
Go-to-market
2 tools, how they find and keep customers
Marketing
Ads & Pixels
Company Ops
3 tools, what the team runs on day to day
Email Delivery
Workspace
Core Twelve tech stack FAQ
What tools does Core Twelve use?
As of November 2026, runsonwhat has found 11 tools at Core Twelve (core12.com) in public records. Edge & Hosting: Cloudflare, Vercel and Microsoft Azure. Application: Cloudinary. Data & Observability: Google Analytics and Google Tag Manager. Go-to-market: Google Ads and Mailchimp. Company Ops: Microsoft 365, Apple Business and Elastic Email. Last checked October 29, 2026.
What cloud does Core Twelve run on?
Core Twelve uses Vercel for hosting and cloud infrastructure, alongside Microsoft Azure, according to runsonwhat (November 2026). runsonwhat found Vercel through a DNS verification record for Vercel. Vercel is used by 51,674 companies runsonwhat tracks.
What email provider does Core Twelve use?
Core Twelve uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 722,425 companies runsonwhat tracks.
What analytics tools does Core Twelve use?
Core Twelve uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on core12.com. Google Analytics is used by 906,143 companies runsonwhat tracks.
What marketing software does Core Twelve use?
Core Twelve uses Mailchimp for marketing, according to runsonwhat (November 2026). runsonwhat found Mailchimp through email records that authorize Mailchimp. Mailchimp is used by 117,958 companies runsonwhat tracks.
Does Core Twelve use Cloudflare?
Yes. runsonwhat found Cloudflare at Core Twelve through DNS records that point at Cloudflare and email records. Cloudflare is a CDN & Edge tool used by 726,939 companies runsonwhat tracks.
How does runsonwhat know what Core Twelve uses?
runsonwhat reads public records only. Of the 11 tools at Core Twelve, 4 were found through code on core12.com, 3 through DNS records, 3 through email records and 1 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and core12.com about monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.