Identity graph
257 headquarters, locations and relationships
- Legal name
- 257 Co.
- Industry
- Software
- Founded
- 2023
- Phone
- +44 7770 405403
- Website
- 257.co
- LinkedIn profile for 257
257 office locations
| City | State / region | Country | Type |
|---|---|---|---|
| New York City | New York | United States | Headquarters |
| — | — | Australia | Office |
| Paris | Île-de-France | France | Office |
| Saint-Étienne | Rhône-Alpes | France | Office |
| Venice | Veneto | Italy | Office |
| Nagano | Nagano | Japan | Office |
- Parent company
- No parent company recorded in GraphIQ.ai.
Verified from public filings, company websites and news · Methodology
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Technographics (available after sign-in)
Software, cloud and infrastructure in use.
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Firmographics (available after sign-in)
Revenue, headcount, growth and industry codes.
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Capabilities (available after sign-in)
Products, services and certifications.
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News (available after sign-in)
Recent coverage and signals, resolved to the entity.
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And more (available after sign-in)
Subsidiaries, people and lookalike companies.
Who uses the 257 entity
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Revenue and GTM teams
Territories, enrichment and account expansion on one resolved account.
RevOps Sales & marketing -
Developers and AI agents
The entity and its relationships through the REST API and MCP server.
Developers -
Private equity and investors
Corporate family, comparable companies and deal sourcing.
Private equity -
Industry and supply chain
Suppliers, sites and partners mapped to the right legal entity.
Industry -
Government and public sector
Supplier vetting, ownership and jurisdiction checks against one verified entity.
Government
About 257
257 is headquartered in New York City, New York, United States. Founded in 2023, the company has 19 recorded locations across 11 countries and employs approximately 5 people worldwide.
Where is 257's main office?
257's main headquarters office is located at New York City, New York 11217, United States. This is the company's primary corporate address.
257 regional offices
Beyond its headquarters in New York City, 257 has recorded locations in United States, Australia, France, Italy, Japan, New Zealand, Saudi Arabia, Spain and 3 other countries.
257 contact information
The main switchboard for 257 headquarters can be reached at +44 7770 405403. Official website: 257.co.
What does 257 do?
257 is a residential energy data platform. We build digital energy twins for every home in the US, and then enable use of these twins through analytics tools, APIs and marketing tools. Data will have a transformative impact on the electrification and operation of our ever-smarter homes. We equip partners in the solar, HVAC, retail electric, and utility sectors with the data they need to engage homeowners and accelerate electrification. 257 was founded by Scott Rosenberg and Tal Chalozin, successful entrepreneurs with decades of experience in platform businesses, consumer marketing, and large-scale data sets. We are backed by awesome advisors, angels and VCs, and powered by a growing team of data and energy nerds. We’re also hiring. Hit us up!
One entity, every stage
Put 257 to work across your revenue bowtie
- Target Define the market Build the account list from companies shaped like your best customers, 257 included. Fingerprint search
- Cover Plan territories 257's 19 locations roll up to one account, so it lands in one territory, once. Territory planning
- Engage Act on timing Leadership changes, funding and M&A arrive linked to the account, not a loose headline. Signal monitoring
- Convert Close on a resolved record Inbound and closed-won attach to one CRM record, with no duplicates to merge. CRM enrichment
- Retain Ground every answer Customer teams and AI agents answer from the same entity, with a source and a date. AI agent data layer
- Expand Find the next buyer inside Follow subsidiaries and divisions to the next team that can buy. Account expansion
About the source
What is GraphIQ.ai?
A B2B identity graph. It resolves each organization into one verified entity and maps its parent and subsidiaries, employees, competitors and news signals. Revenue teams use it in the product; AI agents query it through the REST API and MCP server.
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257: frequently asked questions
Where is 257 headquarters?
New York City, New York 11217, United States.
What is 257's phone number?
+44 7770 405403 (headquarters).
When was 257 founded?
2023.
How many employees does 257 have?
About 5, as of October 2026 (GraphIQ.ai estimate).
How many offices does 257 have?
19 locations across 11 countries, including Paris, Saint-Étienne, Venice, Nagano.
Questions about GraphIQ.ai
Is GraphIQ.ai a list of companies like a spreadsheet?
No. Each organization resolves to one verified entity linked to its parent, subsidiaries, people and signals, so 257 here is the same 257 in your CRM, territory plan and agent answers.
Where does this 257 data come from?
Public filings, company websites and news, resolved to one entity and continuously updated.