MSP-US-CT-CITADEL-BLUE
Citadel Blue
Managed service provider · Stamford, Connecticut
11–50 staffFounded 201024/7
Website citadelblue.comLinkedIn
Last checked 7 Nov 2026 · 38 sourced facts
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“Citadel Blue delivers expert IT services to help businesses grow with reliable technology, assistance, and innovation.”reported by the company · citadelblue.com · 7 Nov 2026
- Staff / size
- 11–50
- Founded
- 201016 yrs
- Offices
- 3
- Services
- 13of 13
- Industries
- 3
- Stack tools
- 3
- Certifications
- 0
- Support
- 24/7
1Stack: the tools we found
- PSA / ticketingnot found
- RMMnot found
- Remote accessScreenConnectSite
- Documentationnot found
- SecuritySentinelOneSite
- Backupnot found
- MailMicrosoft 365DNS
- NetworkingFortinetSite
Marks: DNS detected in public DNS, Site named or badged on their site, Job ad named in their job ad. “Not found” means not seen on public pages, not “not used”. See how we check.
Every tool with its source
| Tool | How we know |
|---|---|
| ScreenConnect | detected (link on their site) · citadelblue.com · 7 Nov 2026 |
| SentinelOne | partner badge on their site · citadelblue.com · 7 Nov 2026 |
| Fortinet | partner badge on their site · citadelblue.com · 7 Nov 2026 |
| Microsoft 365 (own mail) | detected (public DNS) · citadelblue.com · 7 Nov 2026 |
2Services coverage
- Help desk / IT support (offered)
- Co-managed IT (offered)
- NOC / monitoring (offered)
- SOC / MDR (offered)
- Cybersecurity (offered)
- Cloud / Microsoft 365 / Azure (offered)
- Backup / disaster recovery (offered)
- Compliance (offered)
- VoIP / UCaaS (offered)
- Networking (offered)
- IT procurement (offered)
- vCIO / consulting (offered)
- AI services (offered)
From citadelblue.com/managed-it/, citadelblue.com. Empty squares: not found on their pages.
Compliance frameworks named: HIPAACMMCNISTPCI DSSFTC Safeguards
3Industries served
LegalpageManufacturingpageEducationpage
| Client size targeted | “SMBs”reported by the company · citadelblue.com · 7 Nov 2026 |
|---|
From the MSP’s industry pages and case studies. Sources: /legal-law-firm-it/, /manufacturing-it/, /education-it-services/.
4Support model
24 hours, 7 days (as published)
| Support hours | 24/7reported by the company · citadelblue.com · 7 Nov 2026 |
|---|---|
| Published hours | not published |
| 24/7 monitoring | yesreported by the company · citadelblue.com · 7 Nov 2026 |
| After-hours / emergency line | not published |
| Help desk location | US-basedreported by the company · citadelblue.com · 7 Nov 2026 |
| Response time (as published) | 2-minute responsereported by the company · citadelblue.com · 7 Nov 2026 |
| Response time (as published) | 2-minute average responsereported by the company · citadelblue.com · 7 Nov 2026 |
5Location and company
Outline: US Census Bureau cartographic boundaries. HQ position from its public map listing, to about 1 km.
| Headquarters | 6 Landmark Square 4th floor, Stamford, CT 06901Google Maps listing · google.com · 7 Nov 2026 |
|---|---|
| Other offices | Greenwich, CT · West Hartford, CTreported by the company · citadelblue.com · 7 Nov 2026 |
| Service area (as published) | not published |
| Trading name | Citadel BlueGoogle Maps listing · google.com · 7 Nov 2026 |
| Legal name | not published |
| Phone (switchboard) | +1 475-325-5422Google Maps listing · google.com · 7 Nov 2026 |
| Business mailbox | not published |
| Ownership | not published |
| Google rating | 5 / 5 from 4 reviewsGoogle Maps listing · google.com · 7 Nov 2026 |
6Size, certifications and peers
| Staff (their site) | not published |
|---|---|
| Size band | 11–50 staffreported by the company · linkedin.com · 7 Nov 2026 |
| LinkedIn company size | 11-50 employeesreported by the company · linkedin.com · 7 Nov 2026 |
| Clients (as published) | not published |
| Microsoft partner | not published |
| Vendor partner tiers | not published |
| Own certifications | not published |
- Larger than 25% of the 28 MSPs in Connecticut with a known size.
- 3 stack tools found vs a median of 2 across 3,165 fully researched US MSPs.
- 13 of 13 services vs a median of 9.
From the public profiles on MSP Scope (sample sizes shown). Facts not found count as not found, so small or quiet websites score lower.
7Timeline
- 2010Foundedtheir site’s structured data · citadelblue.com · 7 Nov 2026
Only dated, sourced items. Acquisitions and rebrands appear here when the MSP or a public register states them.
8Pricing (as published)
no prices published on the pages we read
Only prices the MSP publishes for its own managed service (per user or per device). See published MSP pricing.
9Nearby and similar MSPs in Stamford
Computronix Managed IT SupportStamford · 11–50 staff
ASG Information TechnologiesWallingford · 11–50 staff
Kelser CorporationGlastonbury · 11–50 staff
Innovative Network Solutions Corp.Stamford- Pylon Technology Company LLCStamford
CorCystems Managed IT ServicesRidgefield · 11–50 staff
Same town first, then similar size, stack and services. More: all MSPs in Stamford · all MSPs in Connecticut · other MSPs offering help desk / it support.
10Revision history and sources
Researched 7 Nov 2026 (full pass), last checked 7 Nov 2026. 15 public pages read.
Logo: from citadelblue.com, the MSP’s own site, seen 8 Nov 2026; trimmed and resized only. Remove or replace it.
Pages we read
- www.citadelblue.com/
- www.citadelblue.com/about-us/
- www.citadelblue.com/managed-it/
- www.citadelblue.com/managed-soc/
- www.citadelblue.com/aws-services/
- www.citadelblue.com/contact-us/
- www.citadelblue.com/manufacturing-it/
- www.citadelblue.com/legal-law-firm-it/
- www.citadelblue.com/education-it-services/
- www.citadelblue.com/non-profit-it-services/
- www.citadelblue.com/vendor-audit/
- www.citadelblue.com/it-helpdesk/
- www.citadelblue.com/sox-compliance/
- www.citadelblue.com/email-security/
- www.citadelblue.com/testimonial/
Anything not found stays empty. We never guess. Spot an error? Correct it.