Quick answer
What does the US broadband IP index 2026 show?
The index combines RIPEstat routing data (2026-10-18), company subscriber filings and the FCC National Broadband Map (December 31, 2025 data) for 35 US ISPs and 45 large cities. AT&T and Comcast announce the most IPv4 space; fiber reaches 93.5% of homes in Kansas City but 13.4% in Baltimore. Published by Broadband Proxies, free to cite.
What are the key findings?
- AT&T and Comcast run the largest home networks by address space. Their listed ASNs announced 96,429,312 and 68,238,848 IPv4 addresses on 2026-10-18, per RIPEstat.
- 15 of the 35 ISPs use more than one ASN. Spectrum alone keeps ten in our list, from AS20115 to former Time Warner Cable and Bright House networks.
- Fiber availability ranges from 93.5% (Kansas City) to 13.4% (Baltimore) of residential units across our 45 cities; the median is 62.2%.
- Cable is near-universal: the median city has cable available to 95.5% of residential units.
- Gigabit service (1,000/100 Mbps) is widest in Pittsburgh (99.3%) and narrowest in Columbus and Richmond (38.7%).
- Comcast reports service to at least half of the homes in 22 of our cities, Charter Spectrum in 17, and AT&T in 44.
- Ownership moved faster than routing in 2026: Cox (Charter since August 19), Frontier (Verizon since January 20) and Quantum Fiber (AT&T since February 2) still announced their homes on their own ASNs on 2026-10-18.
Which ISPs announce the most IPv4 space?
Total IPv4 addresses announced by the ASNs we list for each ISP, from RIPEstat routing status on 2026-10-18. A network's size is not the number of proxy IPs any seller has on it.
| Rank | ISP | ASNs counted | IPv4 announced | Latest subscriber figure |
|---|---|---|---|---|
| 1 | AT&T Fiber | AS7018 | 96,429,312 | 15,479,000 internet connections on June 30, 2026, including 12,144,000 consumer AT&T Fiber and 1,951,000 AT&T Internet Air customers |
| 2 | Comcast Xfinity | AS7922 | 68,238,848 | 28,486,000 domestic residential broadband customers on June 30, 2026 (28,989,000 a year earlier) |
| 3 | Spectrum (Charter) | AS20115, AS10796, AS20001, AS11427, AS33363, AS11426, AS11351, AS12271, AS7843, AS33588 | 54,136,064 | 29,388,000 Internet customers on June 30, 2026 (27,358,000 residential and 2,030,000 small business) |
| 4 | Verizon 5G Home Internet | AS22394, AS6167 | 48,352,000 | 6,208,000 fixed wireless broadband connections on June 30, 2026 |
| 5 | Verizon Fios | AS701 | 41,641,728 | 17,121,000 total broadband connections on June 30, 2026: 10,913,000 fiber (Fios plus Frontier fiber) and 6,208,000 fixed wireless |
| 6 | CenturyLink and Quantum Fiber | AS209, AS22561 | 21,160,448 | 2,381,000 Mass Markets broadband subscribers on December 31, 2025 (1,222,000 fiber and 1,159,000 other, mostly copper) |
| 7 | T-Mobile Home Internet | AS21928 | 13,130,240 | 9,447,000 total broadband customers on December 31, 2025, including 8,450,000 5G broadband (Home Internet) customers; T-Mobile stopped publishing the totals in 2026 |
| 8 | Frontier Fiber | AS5650 | 10,757,120 | 2,597,000 consumer fiber broadband customers and 481,000 consumer copper customers on September 30, 2025, the last standalone report before the Verizon acquisition |
| 9 | Kinetic (Windstream) | AS7029 | 10,593,536 | About 603,000 residential fiber customers and about 2.1 million fiber-equipped households on June 30, 2026 |
| 10 | Astound Broadband (RCN, Wave, Grande) | AS6079, AS11404, AS7459 | 8,738,048 | Not published: Astound is privately held |
| 11 | Optimum | AS6128, AS19108 | 7,906,048 | 4,049,700 broadband customers on June 30, 2026 (3,714,300 residential and 335,400 small business), including 748,900 fiber customer relationships |
| 12 | Brightspeed | AS19901 | 3,038,720 | Not published. Brightspeed reported more than 3 million fiber-enabled locations on April 2, 2026, and a footprint able to serve more than 7.3 million homes and businesses |
| 13 | Google Fiber (GFiber) | AS16591, AS19165 | 2,768,384 | Not published by Alphabet |
| 14 | TDS Telecom | AS4181 | 1,809,152 | 567,700 residential broadband connections on June 30, 2026: 134,300 incumbent fiber, 77,700 incumbent copper, 179,600 expansion fiber and 176,100 cable |
| 15 | Mediacom | AS30036, AS25613 | 1,468,928 | Not published: Mediacom is privately held |
| 16 | Sparklight (Cable One) | AS11492 | 1,259,776 | 870,000 residential data customers on June 30, 2026 (887,400 residential customers in total) |
| 17 | Breezeline | AS11776 | 1,053,952 | 605,279 internet subscribers on May 31, 2026, after a net loss of 4,472 in the quarter, as reported by the Canadian trade outlet Cartt from Cogeco's fiscal third-quarter results |
| 18 | Ziply Fiber | AS20055, AS27017 | 955,392 | 445,525 high-speed internet subscribers on June 30, 2026, including 378,255 residential fiber subscribers |
| 19 | WOW! | AS12083 | 897,792 | 457,100 high-speed data subscriptions on September 30, 2025, with 2,018,800 homes passed |
| 20 | altafiber (Cincinnati Bell) | AS6181 | 825,088 | 394,600 Midwest internet subscribers on plans of 100 Mbps or more, plus 9,300 legacy internet subscribers, on March 31, 2026 |
| 21 | Midco | AS11232, AS11055 | 784,384 | Not published: Midco is privately held |
| 22 | Sonic | AS46375 | 673,536 | Not published: Sonic is privately held |
| 23 | Hotwire Communications | AS23089 | 583,680 | Not published: Hotwire is privately held |
| 24 | Fidium (Consolidated) | AS13977, AS22647 | 531,968 | Not published (private company since December 27, 2024) |
| 25 | Hawaiian Telcom | AS36149 | 370,944 | 134,100 internet subscribers on plans of 100 Mbps or more, plus 14,700 legacy internet subscribers, on March 31, 2026 |
| 26 | GCI (Alaska) | AS8047 | 325,632 | 155,400 consumer broadband subscribers on June 30, 2026 |
| 27 | ALLO Communications | AS15108 | 317,440 | Not published since 2020 (more than 53,000 residential customers at that time) |
| 28 | Armstrong | AS27364 | 314,880 | Not published: Armstrong is privately held |
| 29 | Lumos (T-Mobile Fiber) | AS7795, AS15227 | 296,192 | Not reported separately: T-Mobile took over 97,000 Lumos fiber customers in the second quarter of 2025 and counts them in its own fiber total |
| 30 | Buckeye Broadband | AS13490 | 231,680 | Not published: Buckeye Broadband is privately held |
| 31 | Ting Internet | AS32133, AS21803 | 124,672 | 60,500 active subscribers on June 30, 2026, with access to 126,000 owned and 137,000 partner serviceable addresses |
| 32 | EPB Fiber (Chattanooga) | AS26827 | 111,104 | More than 132,000 communications customers |
| 33 | Point Broadband | AS26479 | 35,840 | Not published |
| 34 | Starry | AS27611 | 24,576 | Nearly 100,000 customers in multi-dwelling buildings when the Verizon deal was announced on October 8, 2025 |
How does broadband technology differ by city?
Share of residential units where each technology is reported at any speed, and where any terrestrial provider reports 1,000/100 Mbps.
| City | Fiber | Cable | Copper DSL | Gigabit | Widest wired providers |
|---|---|---|---|---|---|
| Kansas City | 93.5% | 93.9% | 55.1% | 95% | Spectrum, Google Fiber, AT&T |
| Providence | 88.5% | 88.6% | 0% | 75.6% | Verizon, Cox, AT&T |
| Philadelphia | 86.8% | 99% | 0.1% | 84% | Comcast, Verizon, AT&T |
| Pittsburgh | 84.4% | 99.4% | 0.4% | 99.3% | Comcast, Verizon, AT&T |
| New York | 79.3% | 97.3% | 0.3% | 70.8% | Verizon, Spectrum, Optimum |
| Cincinnati | 77.4% | 96.4% | 14.7% | 98.7% | Spectrum, altafiber, AT&T |
| Seattle | 77.1% | 97.7% | 25.4% | 95.7% | Comcast, CenturyLink, AT&T |
| Tampa | 75.4% | 92.1% | 0% | 81.3% | Spectrum, AT&T, Frontier |
| Raleigh | 73.2% | 91.6% | 54.4% | 74.6% | Spectrum, AT&T, Google Fiber |
| Louisville | 73.1% | 95.4% | 59.5% | 98.1% | Spectrum, AT&T, Kinetic |
| Minneapolis | 72.1% | 97.7% | 35.4% | 97.8% | Comcast, CenturyLink, AT&T |
| San Antonio | 71.7% | 93.5% | 29.1% | 85.5% | Spectrum, AT&T, Google Fiber |
| Portland | 71.5% | 97.7% | 20.5% | 81.9% | Comcast, CenturyLink, AT&T |
| Boston | 70.2% | 99.5% | 0% | 76.2% | Comcast, Verizon, AT&T |
| Virginia Beach | 68.9% | 89.6% | 0.3% | 65% | Cox, Verizon, AT&T |
| Nashville | 68.8% | 95.5% | 62.1% | 94.3% | Comcast, AT&T, Google Fiber |
| Richmond | 68.6% | 98.7% | 0% | 38.7% | Comcast, Verizon, AT&T |
| Charlotte | 68.5% | 93.1% | 52% | 70.1% | Spectrum, AT&T, Google Fiber |
| Austin | 68.2% | 91.6% | 42.9% | 84% | Spectrum, AT&T, Google Fiber |
| Oklahoma City | 65.6% | 77.2% | 40.1% | 81.9% | Cox, AT&T |
| Denver | 64.3% | 93.3% | 49.2% | 93.7% | Comcast, CenturyLink, AT&T |
| Washington, D.C. | 62.5% | 97.6% | 0% | 79.7% | Comcast, Verizon, AT&T |
| Dallas | 62.2% | 92.7% | 34.7% | 95.8% | Spectrum, AT&T, Frontier |
| Indianapolis | 61.4% | 98% | 54.9% | 79.6% | AT&T, Comcast, Spectrum |
| Atlanta | 60.2% | 93.5% | 54.4% | 93.7% | Comcast, AT&T, Google Fiber |
| Miami | 60.2% | 92.9% | 76.7% | 96.8% | Comcast, AT&T, Hotwire |
| Houston | 55.2% | 94.9% | 36.5% | 89% | Comcast, AT&T, Optimum |
| Milwaukee | 54.8% | 95.4% | 68.6% | 57.7% | Spectrum, AT&T |
| St. Louis | 54.6% | 96% | 53.8% | 97% | Spectrum, AT&T, Brightspeed |
| Jacksonville | 54.3% | 96.2% | 47.5% | 81.7% | Comcast, AT&T, Hotwire |
| Orlando | 52.1% | 88.5% | 48% | 58.3% | Spectrum, AT&T, CenturyLink |
| Sacramento | 51.5% | 98% | 47.5% | 95% | Comcast, AT&T, Fidium |
| Cleveland | 46.3% | 96.3% | 69.3% | 49.6% | AT&T, Spectrum, Breezeline |
| San Francisco | 44% | 97.4% | 78.4% | 73.6% | Comcast, AT&T, Sonic |
| Memphis | 43.8% | 99.4% | 78.9% | 89% | Comcast, AT&T, Ting |
| San Diego | 40.2% | 89.7% | 63.8% | 68.2% | AT&T, Cox, Spectrum |
| San Jose | 37.3% | 97.4% | 60.1% | 95.5% | Comcast, AT&T |
| Los Angeles | 37.2% | 93.8% | 60.4% | 52.9% | Spectrum, AT&T, Frontier |
| Columbus | 35.5% | 97.2% | 72.2% | 38.7% | Spectrum, AT&T, Breezeline |
| Las Vegas | 33.6% | 82.9% | 56.5% | 86.2% | Cox, CenturyLink, AT&T |
| Chicago | 33.3% | 99.2% | 67.2% | 54.5% | Comcast, AT&T, Astound |
| Riverside | 31.8% | 90.7% | 57.8% | 48.1% | Spectrum, AT&T, Frontier |
| Phoenix | 27.2% | 73.7% | 73.9% | 73.1% | Cox, CenturyLink, AT&T |
| Detroit | 22.4% | 98.7% | 67.2% | 71.6% | Comcast, AT&T, Spectrum |
| Baltimore | 13.4% | 97.5% | 0.2% | 96.7% | Comcast, Verizon, AT&T |
How was the index built?
- ASNs: we searched RIPEstat and PeeringDB for each ISP, kept the ASNs whose registered holder matches the company, and read their routing status on 2026-10-18. ASNs that announced nothing that day are listed on ISP pages but count as zero.
- Subscribers: from each company's latest quarterly or annual filing, with the exact metric name; private companies publish none.
- Cities: the principal city of the 45 largest metro areas in the Census Bureau's Vintage 2025 estimates; provider and technology shares from the FCC National Broadband Map Area Summary for each Census place, data as of December 31, 2025. Satellite providers are left out of provider lists.
- Limits: FCC figures describe where providers say they can serve, not subscribers. Routing counts describe network size, not proxy pools.
Can I reuse this data?
Yes. Cite "Broadband Proxies, US broadband IP index 2026" with a link to this page. The underlying sources (RIPEstat, FCC, Census, company filings) are public; check them for your own use. Corrections are welcome at [email protected].
US broadband IP index: FAQ
Does a bigger network mean more proxy IPs?
Not necessarily. A residential pool depends on which home devices opted in through partner networks, not on an ISP's address space. Broadband Proxies does not publish IP counts per ISP: ASN availability varies by network, city and time of day; the checkout shows what is online, and no IP count per ISP is published.
Why is Cox missing from the IPv4 ranking?
RIPEstat's routing-status query for Cox (AS22773) timed out repeatedly on 2026-10-18, so we left it unmeasured rather than estimate it.
How often will the index be updated?
At least once a year, and after major mergers or a new FCC data release. Each update keeps the date of every source.
Where can I target these networks?
Every ISP in the index can be targeted with asn-<number> on any Broadband Proxies residential plan, from $2.63 for 1 GB as of October 2026.
Sources (4)
- RIPEstat Data API (routing status, AS overview) — RIPE NCC (2026-10-18)
- FCC National Broadband Map, Area Summary (December 31, 2025 data) — Federal Communications Commission (2026-10-18)
- Metropolitan statistical area population totals: Vintage 2025 — U.S. Census Bureau (2026-10-18)
- PeeringDB network search — PeeringDB (2026-10-18)