What Seimitsu does

Seimitsu is a Savannah, Georgia-based, family-owned technology services provider founded in 1984 by Seimitsu 'Sam' Cook and his wife Cindy. The company operates a 70+ mile company-owned fiber network in the Savannah area and delivers an integrated stack of fiber internet, voice, managed IT, infrastructure design and cabling, and managed cybersecurity to SMB and enterprise customers across the Southeast United States. It also runs TrueConnX Home, a residential broadband sub-brand, and is veteran-owned certified.

The product portfolio is organized into three families: (1) Fiber Internet and Voice, with three symmetrical speed tiers (Starter up to 50 Mbps, Advanced up to 100 Mbps, Premium up to 1 Gbps) and three voice feature tiers (Basic, Advanced, Executive) sold as monthly subscriptions; (2) Managed IT and Infrastructure, covering tech support, cloud, structured cabling, and network design; and (3) TrueSecure, a managed cybersecurity suite that bundles vCISO services, a $500,000 Security Service Assurance warranty, dark web monitoring, MFA via Duo, cyber awareness and phishing training, compliance management (HIPAA, PCI, CMMC, FERPA, GLBA, SOX), MDR powered by Cynet360, and a 24/7 SOC. The SouthernWaves sub-brand is a strategic alliance with Southern Telecom (a Southern Company subsidiary) that delivers lit fiber services across Georgia, Alabama, Florida, and Mississippi by combining Southern Telecom's 10,000-mile fiber backbone with Seimitsu's network management and cybersecurity.

Revenue mechanics are predominantly recurring monthly subscriptions across connectivity, voice, and managed services, supplemented by infrastructure project work and product sales on a quote basis. The go-to-market is sales-led and direct, with marketing driven by the company website, content/news publishing, community partnerships (notably the Savannah Downtown Business Association), customer testimonials (Coastal Logistics Group), and earned media such as a City of Savannah mayoral proclamation in November 2024. Seimitsu is privately held with no disclosed outside investors, no funding rounds, and no parent company; primary enterprise anchors are Coastal Logistics Group, SoDo Atlanta LLC, and Atlanta Tech Village.

Name

Seimitsu

Legal name

Seimitsu, Inc.

Website

https://seimitsu.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

11–50 employees

Short description

Seimitsu is a family-owned Savannah, Georgia fiber and managed-technology provider, founded in 1984, delivering fiber internet, voice, managed IT, infrastructure, and TrueSecure cybersecurity to SMBs and enterprises across the Southeast United States.

Ownership category

akta.pro rank

Product category

Managed IT and Telecommunications Services

NAICS

Wired Telecommunications Carriers (517111), Computer Systems Design and Related Services (5415), Computer Systems Design and Related Services (54151)

SIC

Computer Communications Equipment (3576), Services-Computer Integrated Systems Design (7373), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Fiber ISPs (FTTH/FTTP Retail Providers) (HDAIADAE)

akta.pro secondary industries

Subsea & Terrestrial Backhaul to Data Centers and Cloud On-Ramps (IX/DC Interconnect) (HDAIALAJ), Wholesale Wavelength, Spectrum & Dark Fiber Providers (IRU/Leases) (HDAIALAI)

Keywords

• Fiber internet services
• Managed IT services
• Managed cybersecurity services
• Network infrastructure design
• Business voice solutions

Headquarters

HQ city

Savannah

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Infrastructure, Technology or R&D, Operations, Marketing or Sales, Supply Chain

Revenue model

1. Managed IT Services: Ongoing managed technology services including tech support, cloud computing, security solutions, and infrastructure support for businesses.
2. Fiber Internet and Voice Services: High-speed fiber internet connectivity and voice solutions sold as subscription plans with tiered pricing (Starter up to 50 Mbps, Advanced up to 100 Mbps, Premium up to 1 Gbps). Includes phone plans with various feature tiers.
3. Managed Security Services: Cybersecurity services including TrueSecure vCISO program, SOC services, dark web monitoring, phishing training, and compliance support. Sold as subscription/managed services.
4. Infrastructure Services: Network design, wireless and structured cabling solutions, construction planning, and installation services for commercial infrastructure.
5. SouthernWaves Fiber Services: Lit fiber services through the SouthernWaves joint venture, providing bandwidth on Southern Telecom's secure fiber routes with 24/7 NOC monitoring.
6. Product Sales: Equipment and products including hardware, phones, and other technology products as described in quotes/proposals.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Seimitsu provides business fiber internet, voice solutions, managed IT services, network infrastructure design/construction, and managed cybersecurity services (TrueSecure) to SMBs and enterprises in Savannah, Georgia and the broader Southeast US, operating a 70+ mile company-owned fiber network. Through its SouthernWaves strategic alliance with Southern Telecom, it also delivers lit fiber-optic services across Georgia, Alabama, Florida, and Mississippi.

Product overview

Seimitsu is a Savannah, Georgia-based technology solutions provider founded in 1984, operating a 70+ mile company-owned fiber network and offering a portfolio of managed technology and cybersecurity services for businesses. The company's core product family spans three primary areas: (1) Business Fiber Internet and Voice — offered in Starter (up to 50 Mbps), Advanced (up to 100 Mbps), and Premium (up to 1 Gbps) tiers, bundled with three levels of voice services (Basic, Advanced, Executive feature handsets); (2) Managed IT Services and Infrastructure — covering network design, wireless and structured cabling, and construction planning; and (3) Cybersecurity — delivered through the TrueSecure suite including the vCISO program, $500K Security Service Assurance, Dark Web Analytics, MFA, Cyber Awareness Training, Phishing Training, Security Policy Development, Security Risk Assessment, Compliance Management, Managed Detection and Remediation (MDR), Incident Response Team, and a 24/7 Security Operations Center. Additionally, the SouthernWaves sub-brand (a strategic alliance between Southern Telecom/Southern Company and Seimitsu) delivers lit fiber-optic services across Georgia, Alabama, Florida, and Mississippi using Southern Telecom's 10,000-mile fiber network.

Differentiator

Problem solved

Functional benefit

Brands

• SouthernWaves: Strategic alliance between Southern Telecom (subsidiary of Southern Company) and Seimitsu delivering lit fiber-optic services across the Southeast. Provides secure lit services, 24/7 network operations center, and high-security infrastructure using Southern Telecom's 10,000-mile fiber network.
• TrueSecure
• TrueConnX Home

Products and services

• Business Fiber Internet & Voice Business fiber internet and voice services delivered over Seimitsu's company-owned fiber-optic network in Savannah, Georgia, with three internet speed tiers (up to 50 Mbps, 100 Mbps, and 1 Gbps) and three voice feature tiers (Basic, Advanced, Executive). Targeted at businesses requiring reliable connectivity and phone services.
• Managed IT Services Recurring managed technology services covering tech support, cloud computing, security solutions, performance-driven infrastructure, and consulting for business operations in Savannah and the Southeast region.
• TrueSecure Managed Security Services
• SouthernWaves Lit Fiber Services Fully managed bandwidth on Southern Telecom's secure fiber routes with 24/7 network operations center monitoring from Seimitsu's Savannah-based NOC. Provides lit fiber services across Georgia, Alabama, Florida, and Mississippi for enterprise and carrier customers.
• Network Design and Commercial Infrastructure Network design, wireless and structured cabling solutions, and comprehensive construction planning for businesses across industries and building types, including cost-effective network integration.
• TrueConnX Home Home broadband service brand offering residential fiber connectivity to customers on Seimitsu's fiber network, distinct from its commercial fiber business.

Quantifiable outcome

• Up to 1 Gbps fiber internet speeds available
• +3 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

Feature5 records

Partnerships

Eight partnerships are on record, tiered core, supporting and flagship.

• CienacoreTechnology or Integration · 25 June 2024Ciena partnership for XGS-PON technology enabling Seimitsu to extend fiber broadband service to Georgia's coastal communities, providing advanced optical solutions.
• Savannah Technical CollegesupportingOthers · 7 October 2021Faculty collaboration for cybersecurity education and awareness programs. Rushe Hudzinski from Savannah Technical College served as featured speaker at Downtown Business Association cybersecurity luncheon.
• Savannah Downtown Business AssociationsupportingGTM or Marketing Partner · 14 July 2021Partnership with Savannah Downtown Business Association for promoting cybersecurity awareness through educational luncheons and community events. Seimitsu sponsors cybersecurity awareness lectures for local businesses.
• Southern Telecom (Southern Company subsidiary)flagshipStrategic or Co-development PartnerSouthernWaves is a strategic alliance between Southern Telecom and Seimitsu delivering lit fiber-optic services across the Southeast US. Southern Telecom provides its 10,000-mile fiber network infrastructure while Seimitsu delivers network management and cybersecurity. Routes include Atlanta to Jacksonville, Jacksonville to Savannah, Savannah to Augusta (March 2026), Savannah to Valdosta (under construction), Columbus to Atlanta (under construction), Albany to Fitzgerald (under construction).
• Georgia PowercoreStrategic or Co-development PartnerGeorgia Power partnership for South Downtown Atlanta revitalization project, delivering high-capacity infrastructure to support smart city innovation, emergency response coordination, logistics and data transfer, and World Cup readiness for Atlanta Tech Village expansion (56 buildings, 10 blocks).
• CynetcoreTechnology or IntegrationCynet provides the extended detection and remediation (XDR) engine for Seimitsu's TrueSecure security platform, integrating Next-Generation AV (NGAV), Endpoint Detection and Response (EDR), User Behavioral Analytics (UBA), Network Detection and Response (NDR), and Deception technologies.
• Duo (duo.com)coreTechnology or IntegrationDuo provides multi-factor authentication (MFA) technology for Seimitsu's TrueSecure platform, supporting zero trust verification and data security for customer organizations.
• QualyssupportingTechnology or IntegrationQualys provides vulnerability scanning capabilities integrated into Seimitsu's cybersecurity offerings.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Planters Communications: Regional fiber and managed communications provider serving Georgia and South Carolina — directly overlapping with Seimitsu's Savannah/Southeast fiber ISP footprint and SMB customer base.
• Comporium: Family-owned regional fiber, voice, and managed services operator in the Carolinas and Georgia — comparable integrated fiber-plus-managed-IT business model and SMB/enterprise customer mix.
• TPx Communications: National managed IT, UC, and connectivity provider serving SMB and mid-market — directly comparable managed-services-plus-connectivity bundle targeting similar customer segments.
• Vexus Fiber: Regional fiber-to-the-premises ISP with multi-state expansion (TX, LA, NM, OK, IN) — comparable asset-light fiber ISP growth strategy and SMB/business customer base.
• Metronet: One of the largest regional fiber ISPs in the U.S., offering gigabit FTTH to residential and business customers across the Midwest and South — closely comparable FTTH product tiers and XGS-PON technology stack.
• Empire Access: Regional fiber ISP offering high-speed internet, voice, and managed services to homes and businesses in the Northeast and Mid-Atlantic — similar integrated residential/business fiber model.
• TDS Telecom: Regional fiber, cable, and managed services operator with growing managed IT/security offerings — comparable bundled connectivity-plus-managed-services play for SMB and rural markets.
• Granite Telecommunications: National managed communications provider focused on multi-location enterprise and SMB customers — comparable recurring-revenue, bundled-services business model.

Broad incumbents

• Sparklight Business (Cable One): Cable One's business unit providing fiber and managed services across the South and Midwest — overlapping fiber ISP and SMB services but at much larger scale (acquired Hargray in 2021).
• Lumen Technologies: Large national fiber and managed services carrier competing for enterprise connectivity across the Southeast — overlaps at the enterprise lit-services tier where SouthernWaves competes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/seimitsu
• Facebookfacebook.com/seimitsubusinessIT
• LinkedInlinkedin.com/company/seimitsu

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Seimitsu