Every new New York business filing, every dayBlack Castle Marketing
William Dunn, Registered Agent
Black Castle Marketing LLC appears to operate as BLKCASTLE, a content marketing agency offering premium content marketing and digital asset creation services. The business's registered address is in Manhattan, NY, though its website lists an Atlanta, GA location. The site emphasizes building visual authority and eliminating boring business marketing.
Filed July 10, 2026 · Manhattan, NY · New York County
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New York Department of State, Division of Corporations · Entity 7964064 · Retrieved July 12, 2026
About Black Castle Marketing
BLACK CASTLE MARKETING LLC filed in New York on July 10, 2026, as a content marketing agency. William Dunn, listed as owner and registered agent, filed personally. The company is based in Manhattan, New York. Its domain was registered on March 22, 2020, over six years before the filing, through GoDaddy. The website is modern and built with Wonderly. We estimate revenue under $100,000 with 1 to 5 employees, operating online only. No annual report or EIN is on file yet. The same owner name appears on three other entities.
- Domain registered 2,301 days before filing, indicating a long-standing web presence.
- Filed personally by owner William Dunn as registered agent.
- Same owner name appears on three other entities.
- We estimate revenue under $100K and 1-5 employees.
- Online-only footprint with a modern website built with Wonderly.
- First seen by DayOneLead 2 days after filing.
Compiled from the state record, the company's public web presence, and our own research; revenue, employee, and footprint figures are estimates, not verified financials. Updated August 24, 2026.
One of 1,594 new businesses registered in Manhattan in July 2026, and the only marketing agency business registered there that month.
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Filing Details
Verified Business Profile
Contact Information
Verified Website Profile
We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.
Frequently Asked Questions
When was Black Castle Marketing registered?
Black Castle Marketing was registered as LLC on July 10, 2026 in New York.
Where is Black Castle Marketing located?
Black Castle Marketing is based in Manhattan, NY, 10025, in New York County.
What type of business is Black Castle Marketing?
Black Castle Marketing is classified as a marketing agency business (content marketing).
Does Black Castle Marketing have an EIN on file?
No EIN was found on file for Black Castle Marketing at the time of registration.
Who Sells to This Business
Based on the business category, these service providers typically target this type of business.
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