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MSPSIG.DIR · state · as of 2026-10-28

IT service providers in California

850 IT service providers are tracked in California, 593 of them MSPs. Jones IT ranks highest by MSP score. Rated providers average 4.69 on Google.

Providers tracked850593 MSPs
Top rankedJones ITSan Francisco · MSP score 89
Rated providers average4.69★on Google · median score 49
01

Ranked by MSP score

top 25 of 850 shown · sort: score / best reviewed

Filtered: Network management · clear

MSP score parts:Reputation (up to 30)Presence (up to 25)Credibility (up to 20)Scale (up to 15)Momentum (up to 10)
#ProviderServicesGoogleMSP scoreTrending
001Jones IT logoJones ITSan Francisco · MSP · 100-249Managed ITCo-managed ITCybersecurity5.0★ (426)89100 trending up
002Xantrion logoXantrionLafayette · MSP · 100-249Managed ITManaged CybersecurityIT consulting4.9★ (80)88100 trending up
003Trace3 logoTrace3Irvine · IT consulting · 250+Managed ServicesIT consultingAdvisory Services5.0★ (1)84100 trending up
004centrexIT logocentrexITPoway · MSP · 50-99Managed ITCybersecurityCloud migration4.9★ (53)8350 trending up
005Ignition logoIgnitionSan Francisco · MSP · 250+Mobile Device ManagementCybersecurityCompliance5.0★ (24)8225 trending up
006GroupOne logoGroupOneSacramento · MSP · 50-99Managed ITCo-managed ITHelp Desk5.0★ (55)80100 trending up
007Xceptional logoXceptionalSan Diego · MSP · 50-99Managed ITCo-managed ITCybersecurity4.6★ (10)8075 trending up
008ClearFuze Networks, Inc. logoClearFuze Networks, Inc.Los Angeles · MSP · 25-49Managed ITCybersecurityCompliance5.0★ (54)7775 trending up
009Method Technologies logoMethod TechnologiesCypress · MSP · 25-49Managed ITCo-managed ITInternet Phone Service5.0★ (60)7775 trending up
010Infracore logoInfracoreSan Diego · MSP · 50-99Managed ITCybersecurityCloud migration5.0★ (14)7775 trending up
011Methodology IT logoMethodology ITLos Angeles · MSP · 5-9Managed ITCybersecurityHelp Desk5.0★ (161)77100 trending up
012Datapath logoDatapathFresno · MSSP · 50-99Managed ITCo-managed ITHelp Desk5.0★ (8)7675 trending up
013Alvaka logoAlvakaIrvine · MSP · 50-99Vulnerability ManagementRansomware PreventionRansomware Recovery4.9★ (15)7575 trending up
014Onsite Computing, Inc. logoOnsite Computing, Inc.Corona · MSP · 10-24Managed ITCo-managed ITCloud migration5.0★ (62)7550 trending up
015eTop Technology, Inc logoeTop Technology, IncRedlands · MSP · 10-24Managed ITCo-managed ITCybersecurity4.8★ (23)75100 trending up
016CompuOne logoCompuOneSan Diego · MSP · 25-49Microsoft 365Cloud migrationBackup and disaster recovery4.7★ (13)7575 trending up
017Level Up MSP logoLevel Up MSPSan Jose · MSSP · 10-24Managed ITCybersecurityBackup and disaster recovery4.9★ (39)74100 trending up
018AllConnected logoAllConnectedSimi Valley · MSP · 25-49Managed ITCloud migrationBackup and disaster recovery5.0★ (6)7450 trending up
019Kotman Technology logoKotman TechnologyFresno · MSP · 25-49Help DeskManaged ITNetwork management4.8★ (36)7475 trending up
020Fusion Factor Corporation logoFusion Factor CorporationCarlsbad · MSP · 25-49Managed ITEmail ProtectionMicrosoft 3654.8★ (6)7350 trending up
021Sandler Partners logoSandler PartnersRedondo Beach · VAR and telecom · 100-249Cloud migrationManaged ServicesIT consulting5.0★ (2)7350 trending up
022E-Solutions logoE-SolutionsSan Jose · IT consulting · 250+Cloud migrationManaged ITData Analytics4.2★ (5)7375 trending up
023Bay Computing logoBay ComputingConcord · MSP · 10-24Managed ITHelp DeskNetwork management5.0★ (43)7325 trending up
024CIO Solutions logoCIO SolutionsFresno · MSP · 50-99Help DeskManaged ITCybersecurity4.5★ (8)7375 trending up
025Protected Harbor logoProtected HarborBurbank · IT consulting · 50-99Managed ITCybersecurityCloud migration4.9★ (47)730
Showing 25 of 850 · load moreMissing or misranked? Claim it ▸
02

Map

providers by city
San Diego: 68Los Angeles: 54Irvine: 36San Francisco: 34San Jose: 23Fresno: 19Sacramento: 16Santa Barbara: 14Bakersfield: 12Fremont: 12Santa Clara: 12Anaheim: 10Santa Rosa: 10Concord: 8Huntington Beach: 8Lake Forest: 8Pasadena: 8Ventura: 8Burbank: 7Costa Mesa: 7Oakland: 7Roseville: 7Glendale: 6Long Beach: 6Modesto: 6Rancho Cucamonga: 6Simi Valley: 6Torrance: 6Walnut Creek: 6El Segundo: 5Fullerton: 5Laguna Hills: 5Orange: 5Palm Desert: 5Pleasanton: 5Riverside: 5Westlake Village: 5Beverly Hills: 4Calabasas: 4Carlsbad: 4Chatsworth: 4Chula Vista: 4Corona: 4Diamond Bar: 4Petaluma: 4Rancho Santa Margarita: 4Redlands: 4Rocklin: 4San Marcos: 4San Mateo: 4Sunnyvale: 4Temecula: 4Tustin: 4Visalia: 4Aliso Viejo: 3Chico: 3Chino: 3Citrus Heights: 3Culver City: 3San DiegoLos AngelesIrvineSan FranciscoSan JoseFresnoSacramentoSanta BarbaraDrawn from provider coordinates
03

What the data shows

measured 2026-10-28
49.3
Median MSP scoreof California providers
1%
Publish a DMARC policyof California providers
42%
Claim 24/7 supportof California providers
7
Median headcountemployees
132 cities in California carry exactly one tracked provider.
** end of report **
04

Cities in California

top 12 of 120 · providers tracked
San Diego
68Los Angeles
54Irvine
36San Francisco
34San Jose
23Fresno
19Sacramento
16Santa Barbara
14Bakersfield
12Fremont
12Santa Clara
12Anaheim
10
05

From our research

MSPSIG.WIRE
How many IT service providers are in California?
850 tracked as of 2026-10-28.
Which provider ranks highest in California?
Jones IT, by MSP score.
What is the median size of a provider here?
7 employees.
Listed in California?

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