30-day change: –– · No changes detected in the last 180 days.
National rank#5,844of 45,502 · top 13%
CO#153of 1,060 · top 15%
Denver#38of 267 · top 15%
Google 3.9★ (13)Organic ~292/moSecurity headers FHosting NginxDomain 26 yrsNAICS 541512
MSP Signal ranks Istonish #5,844 of 45,502 IT service providers nationally. Istonish is a managed service provider in Denver, CO, founded 1990, with 82 staff. It offers Microsoft 365, VoIP and UCaaS.
Source: MSP Signal, Istonish company profile, Oct 3, 2026, https://mspsignal.com/msp/istonish
01
Score breakdown
5 pillars · weighted · 61.5 / 100
Reputation30%
60/100
Lifted by more Google reviews and a higher rating.
Presence25%
79/100
Lifted by a stronger website and public profiles.
Credibility20%
66/100
Lifted by a fuller record: services, credentials, pricing.
Annette Quintana led Istonish from staffing to national IT services - The Business Journals
Nov 11, 2016 · The Business Journals
About––
MSPSIG.MEMO · summary from public sourcesIstonish has operated in Denver for roughly 26 years, a span that encompasses the industry's shift from on-premise infrastructure to cloud-native deployments. The firm serves education, healthcare, and manufacturing organizations, managing Microsoft 365 and VoIP/UCaaS environments while maintaining SOC 2 compliance. With 50 to 99 staff members, Istonish belongs to a small cohort, about seven MSPs statewide, that combine this particular service mix and compliance posture, a distinction earned through sustained focus rather than breadth.
“At Istonish, our IT service management solutions are customized to align with your specific business goals so that you’re guaranteed to be getting the best possible service for your company.”
Longevity
“State of Colorado Executive Previous Next Technology Solutions that Move Your Business Forward Unlock your business’s full potential by partnering with us, a trusted industry expert with nearly 35 years of experience.”
Compliance
“With our SOC 2 certification, rest assured that we meet the highest standards of security and reliability.”
Availability
“Link to: Managed Security Managed Security We will monitor your network 24x7x365 to keep your data safe, and we will notify you immediately if an incident occurs.”
Certification
“With proven capabilities and certifications in AWS and Azure, our complete suite of cloud solutions address your needs at every step on the digital journey.”
up to three quotations per category
10
Frequently asked questions
reuses public facts · FAQ schema
Where is Istonish located?
4800 Dahlia St.
How many people work at Istonish?
Istonish has 82 staff.
What services does Istonish offer?
Microsoft 365, VoIP and UCaaS.
How does Istonish rank among IT providers in Denver?
#38 of 267 observed providers in Denver; #5,844 of 45,502 nationally.
Is Istonish claimed on MSP Signal?
Not claimed.
Claimed · not shown (unclaimed) · Verified data · conditional on field sources · Registered entity · conditional on legal-entity nameLast observed Oct 3, 2026 · Citation: Istonish company profile · https://mspsignal.com/msp/istonish
