58/100IFR Score
Ranked #1 because of its Google rating and service focus: 4.8★ from 75 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Best Business Phone System Providers in SeaTac, WA (2026)
73 business phone system providers ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in SeaTac: CompassMSP, IFR Score 58/100; 4.8★ from 75 Google reviews.
- 3
Most-reviewed: Astound | Seattle, 2,207 Google reviews at 4.1★, the most of 73 ranked; ranked #3.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
73 SeaTac business phone system providers are ranked here by IFR Score, from nine published factors. 15 open Saturdays and 9 open Sundays, based on posted hours. The median Google rating is 4.5★ across 73 rated IT firms.
Top 10 business phone system providers in SeaTac at a glance
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
| Rank | Business | IFR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | CompassMSP | 58 | 4.8★ (75) | Kent, 3 mi away | — | Overall |
| 2 | Continuant - HQ | 55 | 3.6★ (24) | Tacoma, 15 mi away | Sat · Sun · Evenings | — |
| 3 | Astound | Seattle | 55 | 4.1★ (2,207) | Seattle, 12 mi away | Sat · Evenings | Most reviews |
| 4 | Attentus Technologies - Renton Managed IT Services Company | 55 | 5.0★ (82) | Renton, 3 mi away | Sat · Sun · Evenings | — |
| 5 | Day Wireless Systems | 54 | 4.4★ (24) | SeaTac | — | — |
| 6 | ClearNet Communications | 53 | 4.8★ (19) | Renton, 3 mi away | — | — |
| 7 | Burnham Network Solutions LLC | 53 | 5.0★ (22) | Bellevue, 17 mi away | Evenings | — |
| 8 | Premier Communications | 53 | 5.0★ (24) | Seattle, 16 mi away | — | — |
| 9 | Connect&Protect | 53 | 4.8★ (115) | Seattle, 12 mi away | Sat · Sun · Evenings | — |
| 10 | Warner Telecom Group LLC | 52 | 5.0★ (11) | Tukwila, 2 mi away | — | — |
The 73 best business phone system providers in SeaTac, ranked
Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
Based in Tacoma, 15 mi away
55/100IFR ScoreRanked #2 because of its Google rating and service focus: 3.6★ from 24 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Seattle, 12 mi away
55/100IFR ScoreRanked #3 because of its Google rating and review volume: 4.1★ from 2,207 Google reviews, the most in SeaTac.
Based on 8 of 9 factors; recency not yet collected.
Based in Renton, 3 mi away
55/100IFR ScoreRanked #4 because of its Google rating and review volume: 5.0★ from 82 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in SeaTac
54/100IFR ScoreRanked #5 because of its Google rating and service focus: 4.4★ from 24 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Renton, 3 mi away
53/100IFR ScoreRanked #6 because of its Google rating and service focus: 4.8★ from 19 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Bellevue, 17 mi away
53/100IFR ScoreRanked #7 because of its Google rating and service focus: 5.0★ from 22 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Seattle, 16 mi away
53/100IFR ScoreRanked #8 because of its Google rating and service focus: 5.0★ from 24 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Seattle, 12 mi away
53/100IFR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 115 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Tukwila, 2 mi away
52/100IFR ScoreRanked #10 because of its Google rating and service focus: 5.0★ from 11 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Bothell West, 11 mi away
52/100IFR ScoreRanked #11 because of its Google rating and service focus: 4.9★ from 8 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
#12 Utilities One
Based in Kent, 4 mi away
52/100IFR ScoreRanked #12 because of its Google rating and service focus: 4.4★ from 13 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Tacoma, 20 mi away
52/100IFR ScoreRanked #13 because of its Google rating and service focus: 4.8★ from 20 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Seattle, 16 mi away
52/100IFR ScoreRanked #14 because of its Google rating and service focus: 5.0★ from 16 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Seattle, 12 mi away
52/100IFR ScoreRanked #15 because of its Google rating and service focus: 5.0★ from 45 Google reviews, listed on Google as “Computer support and services”.
Based on 8 of 9 factors; recency not yet collected.
#16 CaberTel
Based in Redmond, 18 mi away
52/100IFR ScoreRanked #16 because of its Google rating and service focus: 4.9★ from 16 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Redmond, 18 mi away
51/100IFR ScoreRanked #17 because of its Google rating and service focus: 3.4★ from 20 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 7 of 9 factors; recency and availability not yet collected.
Based in Tacoma, 18 mi away
51/100IFR ScoreRanked #18 because of its Google rating and service focus: 5.0★ from 8 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 7 of 9 factors; recency and availability not yet collected.
#19 Atlas Networks
Based in Seattle, 11 mi away
51/100IFR ScoreRanked #19 because of its Google rating and service focus: 3.4★ from 52 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Kent, 5 mi away
51/100IFR ScoreRanked #20 because of its Google rating and review volume: 5.0★ from 115 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Kent, 6 mi away
51/100IFR ScoreRanked #21 because of its Google rating and service focus: 4.6★ from 9 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Artondale, 17 mi away
51/100IFR ScoreRanked #22 because of its Google rating and service focus: 4.2★ from 19 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Seattle, 15 mi away
51/100IFR ScoreRanked #23 because of its Google rating and service focus: 4.8★ from 12 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
#24 MegaPath
Based in Seattle, 11 mi away
51/100IFR ScoreRanked #24 because of its Google rating and service focus: 4.0★ from 14 Google reviews, listed on Google as “Telecommunications service provider”.
Based on 8 of 9 factors; recency not yet collected.
Based in Tacoma, 19 mi away
50/100IFR ScoreRanked #25 because of its Google rating and review volume: 4.5★ from 379 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Business phone system providers ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in IFR Score order; each links to its profile. We publish the top 50 of 73 ranked business phone system providers here; the rest are on their profiles.
| Rank | Business | IFR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Intermedia | 50 | 3.7★ (13) | 12 mi |
| 27 | PrismRoute® | 50 | 5.0★ (5) | 16 mi |
| 28 | Astound | Port Orchard | 50 | 3.6★ (1,230) | 15 mi |
| 29 | Sharp Business Systems | 50 | 4.8★ (104) | 3 mi |
| 30 | LINX Pacific Northwest | 50 | 4.6★ (11) | 18 mi |
| 31 | American Fiber Splicing LLC | 50 | 5.0★ (3) | 11 mi |
| 32 | Presco Telecommunications Inc | 50 | 1.8★ (8) | 9 mi |
| 33 | JAG Construction & Communications | 50 | 5.0★ (6) | 27 mi |
| 34 | Economy Wiring Company Inc | 50 | 4.0★ (36) | 3 mi |
| 35 | Comtech TeleCommunication Corporation, Inc. | 50 | 3.2★ (13) | 12 mi |
| 36 | Whisler Communications | 49 | 4.7★ (23) | 42 mi |
| 37 | Tellworks Communications | 49 | 3.5★ (8) | 9 mi |
| 38 | Pro-Comm | 49 | 3.8★ (19) | 25 mi |
| 39 | Network Wiring Services | 49 | 4.4★ (11) | 25 mi |
| 40 | Cerium Networks | 49 | 4.7★ (3) | 3 mi |
| 41 | PicCell Wireless | 49 | 2.3★ (3) | 13 mi |
| 42 | Flowroute | 49 | 2.2★ (13) | 11 mi |
| 43 | G12 Communications | 49 | 1.8★ (5) | 16 mi |
| 44 | Day Wireless Systems | 49 | 4.5★ (13) | 34 mi |
| 45 | Service Communications Inc. | 49 | 5.0★ (3) | 23 mi |
| 46 | Phone Master | 48 | 4.7★ (13) | 39 mi |
| 47 | Viavi Solutions | 48 | 3.8★ (4) | 25 mi |
| 48 | Firstline Communications | 48 | 3.2★ (6) | 13 mi |
| 49 | Pacific Communications Cabling | 48 | 2.5★ (4) | 22 mi |
| 50 | Rivas Technology Group | 48 | 5.0★ (49) | 6 mi |
Also serving SeaTac
20 more business phone system providers within 50 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| American Tech Corp | 5.0★ (1) | 14 mi |
| Call Tools | 5.0★ (1) | 11 mi |
| Cell Phone Cash Headquarters | 1.0★ (1) | 11 mi |
| CMS | 5.0★ (1) | 19 mi |
| Efficient Communication Solutions | 5.0★ (2) | 8 mi |
| FonAngle Communications | 5.0★ (1) | 11 mi |
| Full Circle Solutions, LLC | 3.0★ (2) | 20 mi |
| Geoverse | 5.0★ (1) | 11 mi |
| Keizor | 5.0★ (1) | 21 mi |
| MLS Enterprise Inc | 5.0★ (1) | 21 mi |
| Phase 4 Design, Inc. | 5.0★ (1) | 20 mi |
| SABER Technologies | 3.0★ (2) | 15 mi |
| Seatac Wireless | 4.3★ (15) | In SeaTac |
| Seattle Tacoma Telephone Network DSL T-1 Installers Wiring Installation | 5.0★ (1) | 12 mi |
| Sky Communications | 5.0★ (2) | 11 mi |
| Techpros | 5.0★ (1) | 15 mi |
| Uplink Northwest | 5.0★ (1) | 20 mi |
| Western Telcom LLC | 5.0★ (1) | 5 mi |
| XO Communications | 5.0★ (1) | 12 mi |
| Zenorex International, Inc. | 1.0★ (1) | 12 mi |
How we ranked SeaTac business phone system providers
We scored 73 SeaTac business phone system providers on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.
Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In SeaTac data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Review volume | 15% | Number of Google reviews, compared with the most-reviewed IT firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday and 24/7 support | Measured |
| Service focus | 15% | How clearly the firm does this service (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The firm has claimed its IT Firms Ranked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The firm links to IT Firms Ranked from its own website with our badge, checked periodically | Measured |
| Client reviews | 10% | Verified client reviews collected by IT Firms Ranked: their rating and how many there are | Measured |
How to choose a business phone system provider
- Ask whether the system is cloud-hosted or installed on site, and who maintains it.
- Check internet capacity and backup: a cloud phone system stops when your connection does.
- Ask how 911 locations are registered for each phone and for remote staff.
- Compare per-user prices on the same features (call recording, queues, integrations).
- Ask for two or three references from clients of your size and industry, and call them.
- Get the scope, response times and price in writing before you sign, including how you leave and get your data back.
Questions to ask a business phone system provider
- Is the price per user, and which features are extra?
- Will you port our existing numbers, and how long does it take?
- What happens to calls if our internet connection goes down?
- How are 911 locations set up for office and remote staff?
- Who do we call for support, and during which hours?
- What is the contract length, and are phones bought or leased?
Terms explained
- MSP (managed service provider)
- A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
- Co-managed IT
- An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
- Break-fix
- IT support paid per incident or per hour, with no monthly agreement.
- SLA (service-level agreement)
- The contract terms for response and resolution times, uptime and support hours.
- Help desk
- The support line staff call or email for IT problems.
- RMM
- Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
- vCIO
- A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
- MSSP
- A managed security service provider: a firm that monitors and manages security tools around the clock.
- EDR / MDR
- Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
- MFA
- Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
- Penetration test
- An authorised, simulated attack on your systems to find weaknesses before criminals do.
- SOC 2
- An independent auditor’s report (AICPA standard) on a service provider’s security controls.
Business phone system providers in SeaTac: frequently asked questions
Who is the best business phone system provider in SeaTac?
By IFR Score, the highest-ranked business phone system provider in SeaTac, WA is CompassMSP with an IFR Score of 58/100. It has 4.8★ from 75 Google reviews. Continuant - HQ (#2) and Astound | Seattle (#3) follow. We ranked 73 business phone system providers on nine factors, last updated November 9, 2026.
How many business phone system providers are there in SeaTac?
ITFirmsRanked ranks 73 business phone system providers serving SeaTac, WA. 1 of them is based in SeaTac; the rest serve it from nearby towns. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.
Which business phone system providers in SeaTac work on weekends?
15 of 73 ranked business phone system providers post Saturday hours and 9 post Sunday hours. The highest-ranked open Saturdays are Continuant - HQ (#2), Astound | Seattle (#3) and Attentus Technologies - Renton Managed IT Services Company (#4). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do SeaTac business phone system providers have?
The median Google rating among 73 rated business phone system providers in SeaTac is 4.5★, with a median of 13 reviews. Astound | Seattle has the most, 2,207 reviews, and ranks #3. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ITFirmsRanked rank business phone system providers?
Each business phone system provider gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.
Do business phone system providers outside SeaTac count in this ranking?
Yes, if they are within 50 mi of the SeaTac city center, our service radius for business phone system providers. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.
Can business phone system providers pay to rank higher on ITFirmsRanked?
No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.
What does a business phone system provider do?
Business phone system providers set up and support office phone systems, mostly cloud VoIP today: numbers, desk phones, call routing, voicemail and contact-centre features.
How are business phone system providers in SeaTac ranked?
By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does business phone systems and VoIP, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.
Can we keep our phone numbers if we switch providers?
In most cases yes: numbers can be ported to a new provider in the US and Canada. Keep your current service active until the port is complete, and ask the new provider to manage the port request.
What about 911 calls on a VoIP system?
Each phone needs a registered location so 911 calls go to the right place. In the US, multi-line systems must support direct 911 dialling and send dispatchable location information under federal rules (Kari’s Law and RAY BAUM’S Act). Ask the provider how they set this up.
Update log for SeaTac
- November 2026: IFR Scores recalculated for 73 business phone system providers serving SeaTac.
More business phone system providers and SeaTac pages
Business phone system providers near SeaTac
- Business phone system providers in Tukwila, WA73 ranked
- Business phone system providers in Burien, WA73 ranked
- Business phone system providers in Des Moines, WA73 ranked
- Business phone system providers in Bryn Mawr-Skyway, WA73 ranked
- Business phone system providers in Renton, WA73 ranked
- Business phone system providers in Kent, WA73 ranked
- Business phone system providers in White Center, WA73 ranked
- Business phone system providers in East Hill-Meridian, WA73 ranked
- Business phone system providers in Fairwood, WA73 ranked
- Business phone system providers in Vashon, WA73 ranked
Other services in SeaTac
- Managed IT service providers in SeaTac199 ranked
- Cybersecurity companies in SeaTac119 ranked
- IT consultants in SeaTac179 ranked
- Network cabling and installation companies in SeaTac102 ranked
- Data recovery services in SeaTac110 ranked
- Computer repair shops in SeaTac150 ranked
- All IT providers in SeaTac