Comcast Business Internet Network Management Page

Comcast Business (“Comcast”) provides small business customers with a variety of high-speed broadband Internet access service (“Business Internet”) plans from which to choose, with download speed tiers ranging from up to 150 megabits per second (“Mbps”) to up to 2 gigabits per second (“Gbps”) and upload speeds ranging from up to 25 Mbps to up to 300 Mbps on Comcast’s DOCSIS hybrid fiber-coaxial (“HFC”) network. Comcast also offers a fiber-based Ethernet Dedicated Internet service with symmetrical download and upload speeds of up to 10 Gbps. To see the plans currently available to you, please go to https://business.comcast.com/learn/internet

Comcast provisions its customers’ modems and gateways and engineers its network with the goal of enabling customers to enjoy the Business Internet speeds to which they subscribe. Comcast also provides minimum system recommendations for each of the Business Internet speed tiers it offers, which can be found at https://business.comcast.com/support/article/internet/requirements-to-run-business-internet-service. However, Comcast does not guarantee that a customer will achieve those speeds at all times. Comcast advertises its speeds as “up to” a specific level based on the tier of Business Internet service to which a customer subscribes. As Comcast makes clear in its advertising and pricing information disclosures, “Actual speeds vary and are not guaranteed.” The “actual” speed that a customer will experience while using the service depends upon a variety of conditions, many of which are beyond the control of Comcast as an Internet Service Provider (“ISP”). 

These conditions include: 

  1. Performance of a customer’s computer, smartphone, tablet, or other Internet-connected device, including factors such as its age, processing capability, operating system, the number of applications running simultaneously, and the presence of any adware, viruses and malware.

  2. Type of connection between a customer’s computer and router or gateway. For example, in-office wireless connections, e.g., Wi-Fi, between the device and the router or gateway generally may be slower than wired connections.  Wireless connections also may be subject to greater performance fluctuations, caused by factors like interference, attenuation, and congestion created by other devices in a customer’s office or neighborhood. Comcast recommends that customers confirm that their in-office wireless connections are able to support the speeds that Comcast’s services deliver. Certain older in-office wireless connections and routers cannot perform at the speeds delivered by Comcast’s higher speed tiers. Customers can purchase an approved and compatible modem and router or gateway through a third-party retailer, or they can lease the necessary equipment from Comcast, though even wireless routers and gateways leased from Comcast are subject to some of the same limitations mentioned above. To achieve the best Wi-Fi performance and understand common Wi-Fi problems, please see this article on improving Wi-Fi performance. Where possible, a wired Ethernet connection will usually provide better performance than Wi-Fi. 

  3. The distance and time it takes for packets to travel between a customer’s modem/gateway and their final destination on the Internet, or their point of origination and a customer’s modem/gateway, including the number and quality of the networks of various operators in the transmission path. The Internet is a “network of networks”. A customer’s Internet traffic may traverse the networks of multiple providers before reaching its destination, and the capabilities of those networks, as well as the capacity of the facilities the edge provider (i.e., any provider of content, applications, or services over the Internet) has chosen to route its traffic to Comcast’s network (and the interconnection capacity it has arranged), may affect the overall speed a customer experiences over their Internet connection. 

  4. Congestion or high usage levels at the edge provider or destination. When you access an edge provider or particular destination that is being visited by others at the same time, you may experience a slower connection if the edge provider or destination does not have sufficient capacity to serve all of the visitors efficiently at the same time. 

  5. Gating of speeds or access by the edge provider or destination. To control traffic or performance, many edge providers limit the speeds at which a visitor can download from their site. Those speed limitations will carry through to a customer’s connection.

  6. The performance of the cable modem or gateway a customer has installed. Modem/gateway performance may degrade over time, and certain modems/gateways are not capable of handling higher speeds, such as DOCSIS 2.0 devices or early DOCSIS 3.0 devices. Comcast has a Device-to-Product Enforcement (“DPE”) program to identify when customers may be using incompatible or old modem/gateway devices, whether leased or owned, that cannot support the speeds the customers subscribe to and provides instructions on how to obtain new modems/gateways capable of receiving the speeds and features included with their service. From time to time, Comcast may “end of life” certain cable modems/gateways or cease permitting those devices to attach to the network for network management and security reasons. Additionally, Comcast encourages its customers to promptly contact customer service if they have any concerns about their modem/gateway performance or speed capabilities. Please visit this page for information regarding cable modems/gateways approved for use on Comcast’s network and to determine which devices can support various speeds.

Speed and Latency Measurements

The speed and latency information in the Detailed Measurement Results table below is based on data compiled by Comcast using the testing methodology described here.   

Latency is another measurement of Internet performance. Latency is the time delay in transmitting or receiving packets on a network. Latency is primarily a function of the distance between two points of transmission, but also can be affected by the number and quality of the network or networks used in transmission. Latency is typically measured in milliseconds, and generally has no significant impact on typical everyday Internet usage. As latency varies based on any number of factors, most importantly the distance between a customer’s computer and the ultimate Internet destination, it is not possible to provide customers with a single figure that will define latency as part of a user experience. Comcast has no basis for stating what level of latency should be expected by any particular user at any particular time but notes that latency on its own is usually a reflection of the physical type of access network 

Customers can test the latency characteristics of their service using the web-based Comcast Business speed test noted below. Other latency tests may also be available on the Internet. Of course, other than for the test to the cable modem gateway, these tests will reflect limitations in a customer’s network (especially Wi-Fi) and computers, and therefore will not necessarily reflect the performance of the Comcast network alone. 

Detailed Measurement Results 

When reading these results, each row represents a specific service tier with its respective advertised downstream and upstream speed. For example, the first row represents Comcast’s 150/25 Mbps service tier. 

The tiers listed in the table below are limited to those currently available for purchase as of 5/7/2024. This table may include service tiers that are not available in all markets. 

Technology

 

 

 

Download Speed Tier (Mbps)

 

 

 

Download Speed: Median at Peak (Mbps)

 

 

 

Download Speed: Median - Off-Peak (Mbps)

 

 

 

Upload Speed Tier (Mbps)

 

 

 

Upload Speed: Median at Peak (Mbps)

 

 

 

Upload Speed: Median - Off-Peak (Mbps)

 

 

 

Latency: Median at Peak (ms)

 

 

 

Latency: Median - Off-Peak (ms)

 

 

 

Notation

 

 

 

HFC/DOCSIS SUB-SPLIT

 

 

 

150

 

 

 

178.37

 

 

 

178.47

 

 

 

25

 

 

 

30.3

 

 

 

30.3

 

 

 

16.03

 

 

 

17.4

 

 

 

1

 

 

 

HFC/DOCSIS SUB-SPLIT

 

 

 

300

 

 

 

356.97

 

 

 

356.94

 

 

 

35

 

 

 

40.66

 

 

 

40.75

 

 

 

16.06

 

 

 

15.24

 

 

 

1

 

 

 

HFC/DOCSIS SUB-SPLIT

 

 

 

500

 

 

 

582.21

 

 

 

584.54

 

 

 

35

 

 

 

40.66

 

 

 

40.75

 

 

 

14.62

 

 

 

14.55

 

 

 

1

 

 

 

HFC/DOCSIS SUB-SPLIT

 

 

 

800

 

 

 

951.82

 

 

 

951.77

 

 

 

35

 

 

 

40.66

 

 

 

40.75

 

 

 

17.65

 

 

 

18.2

 

 

 

1

 

 

 

HFC/DOCSIS SUB-SPLIT

 

 

 

1250

 

 

 

1414.95

 

 

 

1441.89

 

 

 

35

 

 

 

40.66

 

 

 

40.75

 

 

 

15.13

 

 

 

14.88

 

 

 

1

 

 

 

HFC/DOCSIS SUB-SPLIT

 

 

 

150

 

 

 

178.37

 

 

 

178.47

 

 

 

100

 

 

 

115.45

 

 

 

115.42

 

 

 

15.43

 

 

 

15.49

 

 

 

1

 

 

 

HFC/DOCSIS MID-SPLIT

 

 

 

300

 

 

 

356.97

 

 

 

356.94

 

 

 

100

 

 

 

115.45

 

 

 

115.42

 

 

 

15.25

 

 

 

16.35

 

 

 

1

 

 

 

HFC/DOCSIS MID-SPLIT

 

 

 

500

 

 

 

582.21

 

 

 

584.54

 

 

 

200

 

 

 

210.01

 

 

 

209.27

 

 

 

16.67

 

 

 

16.11

 

 

 

1

 

 

 

HFC/DOCSIS MID-SPLIT

 

 

 

800

 

 

 

951.82

 

 

 

951.77

 

 

 

200

 

 

 

210.01

 

 

 

209.27

 

 

 

16.31

 

 

 

15.98

 

 

 

1

 

 

 

HFC/DOCSIS MID-SPLIT

 

 

 

1250

 

 

 

1414.95

 

 

 

1441.89

 

 

 

300

 

 

 

241.18

 

 

 

244.36

 

 

 

16.63

 

 

 

15.53

 

 

 

2

 

 

 

HFC/DOCSIS MID-SPLIT

 

 

 

2000

 

 

 

2214.1

 

 

 

2301.52

 

 

 

300

 

 

 

241.18

 

 

 

244.36

 

 

 

15.28

 

 

 

15.12

 

 

 

2

 

 

 

FDX

 

 

 

150

 

 

 

179.09

 

 

 

179.12

 

 

 

150

 

 

 

178.84

 

 

 

178.83

 

 

 

11.41

 

 

 

11.38

 

 

 

1

 

 

 

FDX

 

 

 

300

 

 

 

329.45

 

 

 

329.31

 

 

 

300

 

 

 

325.83

 

 

 

316.73

 

 

 

20.94

 

 

 

20.54

 

 

 

1

 

 

 

FDX

 

 

 

500

 

 

 

549.41

 

 

 

549.48

 

 

 

500

 

 

 

536.31

 

 

 

533.73

 

 

 

12.53

 

 

 

12.26

 

 

 

1

 

 

 

FDX

 

 

 

800

 

 

 

953.02

 

 

 

946.15

 

 

 

800

 

 

 

891.63

 

 

 

923.11

 

 

 

12.77

 

 

 

12.59

 

 

 

1

 

 

 

FDX

 

 

 

1250

 

 

 

1493.89

 

 

 

1493.92

 

 

 

1250

 

 

 

1404.64

 

 

 

1393.24

 

 

 

11.47

 

 

 

11.45

 

 

 

1

 

 

 

FDX

 

 

 

2000

 

 

 

2387.99

 

 

 

2389.9

 

 

 

2000

 

 

 

1717.21

 

 

 

1401.93

 

 

 

12.37

 

 

 

12.42

 

 

 

2

 

 

 

EPON

 

 

 

150

 

 

 

178.62

 

 

 

178.81

 

 

 

150

 

 

 

175.47

 

 

 

175.58

 

 

 

5.36

 

 

 

5.4

 

 

 

1

 

 

 

EPON

 

 

 

300

 

 

 

355.85

 

 

 

355.78

 

 

 

300

 

 

 

351.99

 

 

 

352

 

 

 

7.67

 

 

 

5.21

 

 

 

1

 

 

 

EPON

 

 

 

500

 

 

 

588.86

 

 

 

588.32

 

 

 

500

 

 

 

591.92

 

 

 

553.65

 

 

 

10.23

 

 

 

10.18

 

 

 

1

 

 

 

EPON

 

 

 

800

 

 

 

868.05

 

 

 

868.05

 

 

 

800

 

 

 

887.97

 

 

 

887.97

 

 

 

9.4

 

 

 

9.4

 

 

 

1

 

 

 

EPON

 

 

 

1250

 

 

 

1369.25

 

 

 

1367.84

 

 

 

1250

 

 

 

1437.47

 

 

 

1449.23

 

 

 

7.34

 

 

 

10.22

 

 

 

1

 

 

 

(1) Based on tests to the cable modem gateway.

 

 

 

(2) Based on tests to the cable modem gateway. Software and CPU issues currently constrain the ability of the test to measure higher speeds accurately.

 

 

 

(3) This FTTH service is new and measurement data is still being collected.

 

 

 

(4) Based on measurements conducted for Comcast’s dedicated fiber service, which is limited primarily by ethernet interface constraints.

 

 

 

As the results demonstrate, Comcast Business Internet services deliver over 100 percent of their advertised downstream and upstream speeds during both peak and off-peak times. While individual experiences may vary, Comcast’s tests consistently confirm the delivery quality of Comcast’s Business Internet services.

Comcast’s fastest DOCSIS-based download speed is currently 2 Gbps. But individual customer devices likely will experience speeds lower than this due to the technological limitations of 1 Gigabit Ethernet ports, which are not specific to Comcast’s network. However, multiple devices simultaneously connected to the cable modem gateway can push aggregate usage up to the advertised 1.2 Gbps rate.

Consumers can also test their speeds themselves. Comcast offers its customers the ability to test the speeds that they are receiving on Comcast’s network using a web browser. This test enables customers, depending on their equipment, to test the speed to their cable modem gateway as well as from their device on the customer’s local area network to test sites located throughout Comcast’s network. The test from a customer device can be run via the Comcast Business website.


There are other speed tests available that measure Internet performance as well. We have provided links to a few of these sites below for your reference. Please note, however, that speed tests that originate from a consumer device on the customer’s office local area network (not a gateway or modem) have limitations and flaws and some of them have difficulty measuring multi-hundred megabit per second or gigabit per second service tiers, among other potential issues. Each of these tests measure limited aspects of an ISP’s performance and therefore must be seen as a guide rather than a definitive measurement of the performance of the Comcast network.

WiFi Hotspots

In addition to the Business Internet service that you enjoy at your office, Comcast provides eligible subscribers and other consumers with access to Xfinity WiFi hotspots, which allows those users to access the Internet when they are at one of the many Xfinity WiFi or Cable WiFi hotspots. Comcast engineers the network underlying Xfinity WiFi hotspots to deliver high-performance access to the Internet. However, the performance you experience once you connect to an Xfinity WiFi hotspot may vary based on any number of factors, such as the number of other subscribers trying to use the same hotspot at the same time, your computer or wireless device, your WiFi receiving antenna, your distance from the hotspot router, attenuation from walls and foliage, and interference from other devices using the same spectrum, in addition to many other factors beyond Comcast’s control. These hotspots use spectrum that the FCC has allocated for “unlicensed” use, which means that Comcast’s use of this spectrum is not protected from interference from other devices using the same spectrum in the same geographical area. This makes it inherently difficult to predict the kind of performance you can expect. Therefore, this service is provided solely on a “best efforts” basis.