US Residential Proxies with ASN and ISP Targeting: Comcast, Spectrum, AT&T

What is ASN targeting, and why use it?

ASN targeting picks the internet provider behind your proxy IP. Every ISP announces its IP ranges under one or more autonomous system numbers (ASNs), such as AS7922 for Comcast. With asn-7922 in the username, StatesideIP selects an IP from Comcast's network when one is available.

Use it to see what a site shows to one ISP's subscribers, or to check ISP-specific offers and ads. It also helps you reproduce a customer's issue on their provider. ASN targeting is included at every tier on the pricing page.

Which US ISPs and AS numbers can I target?

The largest US home-internet providers announce their networks under the AS numbers below, per RIPEstat, as of October 2026.

Which Canadian and Puerto Rican networks have their own ASNs?

Canada's main providers announce their own ASNs, per RIPEstat, as of October 2026. Rogers completed its purchase of Shaw on April 3, 2023, so check whether a Shaw target should use AS6327 or AS812.

How do I write an ASN target in the username?

Add asn- and the number, without the "AS" prefix. The full StatesideIP format is USERNAME-country-{cc}-state-{state}-city-{city}-zip-{zip}-asn-{asn}-session-{id}-ttl-{minutes}.

• USERNAME-country-us-asn-7922 — any Comcast IP in the US.
• USERNAME-country-us-state-ny-asn-12271 — Charter's New York City network.
• USERNAME-country-us-state-ca-city-los_angeles-asn-7018 — AT&T in Los Angeles.
• USERNAME-country-us-state-fl-asn-33363 — Charter's Florida network.
• USERNAME-country-us-asn-20115-session-isp1-ttl-20 — one Spectrum IP kept for 20 minutes.

The Python example below checks the ASN of the IP you receive with RIPEstat's public API.

# Comcast (AS7922) IP in Houston, Texas, rotating, over HTTP
curl -x http://gw.statesideip.com:7777 \
  -U "USERNAME-country-us-state-tx-city-houston-asn-7922:PASSWORD" \
  "https://api.ipify.org?format=json"

import requests

HOST = "gw.statesideip.com"
PORT = 7777
user = "USERNAME-country-us-asn-20115"  # Charter (Spectrum)
proxy = f"http://{user}:PASSWORD@{HOST}:{PORT}"

# 1) Exit IP through the proxy
ip = requests.get("https://api.ipify.org?format=json",
                  proxies={"http": proxy, "https": proxy}, timeout=30).json()["ip"]

# 2) ASN lookup in RIPEstat (direct, not through the proxy)
info = requests.get("https://stat.ripe.net/data/prefix-overview/data.json",
                    params={"resource": ip}, timeout=30).json()
print(ip, [a["asn"] for a in info["data"]["asns"]])
# Charter may show a regional ASN, such as 33363 or 12271

How do I find the ASN of an ISP?

Look the ISP up in a public routing database. RIPEstat's AS overview shows the holder name for any AS number. Hurricane Electric's BGP Toolkit (bgp.he.net) lists the prefixes each AS originates. To find the ASN of a known IP, query RIPEstat's prefix overview, as in the Python example. Large ISPs often use several ASNs, so check the regional ones too before you narrow a job to one number.

Which ASN should I use after recent ISP mergers?

Use the ASN that announces the IPs today; a merger changes the owner before it changes the routing. Three recent deals matter for US and Canadian targeting:

• Verizon and Frontier: Verizon completed its purchase of Frontier on January 20, 2026. Frontier's AS5650 is now in Verizon's group.
• AT&T and Quantum Fiber: Lumen sold 95% of Quantum Fiber to AT&T for $5.75 billion. The sale closed on February 2, 2026.
• Rogers and Shaw: Rogers completed its purchase of Shaw on April 3, 2023, and Freedom Mobile went to Vidéotron.

Check the current holder in RIPEstat before you target an ASN.