Your ISP — Internet Service Provider — is the company that sells you internet access. But your ISP is far more than a utility company that pipes data into your home. It sits between you and every website you visit, which gives it a uniquely privileged view of everything you do online.
This article explains what your ISP is, exactly what it can see, and what you can do to limit that visibility.
What Is an ISP?
An Internet Service Provider is any company that provides internet access to customers. Depending on where you live, your ISP might be a cable company (Comcast, Virgin Media), a telephone company (AT&T, BT, Deutsche Telekom), a mobile carrier (Verizon, T-Mobile), or a smaller regional provider.
Your ISP assigns your device a public IP address and routes your traffic to the rest of the internet. Every packet that leaves your home — whether you’re streaming Netflix, sending an email, or visiting a website — passes through your ISP’s network first.
To find out exactly which ISP your current connection uses, visit tools.examineip.com — it shows your IP address, ISP name, and location instantly.
What Can Your ISP See?
This is where things get important. Your ISP’s visibility into your traffic depends heavily on whether the sites you visit use encryption (HTTPS) and whether you use a VPN.
Without a VPN — what your ISP can see:
- Every domain you visit: Even on HTTPS sites, your ISP can see the domain name (e.g. examineip.com) from DNS queries. DNS requests are typically unencrypted unless you use DNS over HTTPS.
- Timing and frequency: When you visited, how long you stayed, how much data you transferred.
- HTTP content: On plain HTTP sites (no padlock), your ISP can see the full URL and page content.
- Your IP address: Your ISP assigns it, so they know exactly which customer it belongs to.
- Your devices: Your ISP can often see how many devices are on your connection and what types (via traffic patterns).
What your ISP cannot see (on HTTPS sites without a VPN):
- The specific page content (the body of HTTPS responses is encrypted)
- Your login credentials or payment details (encrypted by TLS)
- The exact URL path — only the domain (e.g. they see google.com but not the specific search query, usually)
ISP Data Retention Laws
How long your ISP stores records of your browsing activity depends on the country you’re in:
- United States: No federal law mandates retention, but ISPs can legally sell anonymized browsing data to advertisers (since 2017 when Congress repealed FCC privacy rules).
- United Kingdom: The Investigatory Powers Act requires ISPs to store your browsing history for 12 months.
- European Union: GDPR limits data retention, but many EU countries have their own data retention directives for law enforcement purposes.
- Australia: ISPs must retain metadata (not content) for 2 years under the Telecommunications (Interception and Access) Act.
In most countries, ISPs are required to hand over customer data when presented with a valid court order or government request. This is how police can track someone via their IP address.
Can Your ISP See What You Search?
If you use Google, Bing, or DuckDuckGo over HTTPS, your ISP can see that you connected to google.com but generally cannot see your search queries (those are encrypted in the HTTPS body). However, if you’re using your ISP’s own DNS resolver, your DNS queries may reveal the domains you visit as a side effect of looking up IP addresses.
Switching to an encrypted DNS resolver (like Cloudflare’s 1.1.1.1 with DNS over HTTPS) closes this gap. You can verify your DNS settings with the ExamineIP DNS Checker.
Does Your ISP Throttle Your Connection?
Many ISPs practice traffic throttling — intentionally slowing down certain types of traffic like video streaming, BitTorrent, or gaming. They can do this because they can see what type of traffic you’re generating (even over HTTPS, traffic patterns reveal the type of content).
If you suspect throttling, run the ExamineIP Speed Test and compare your results to your subscribed plan speed. If you’re consistently getting much less than you pay for at peak hours, throttling may be the cause.
Tip: A VPN encrypts all your traffic, making it impossible for your ISP to identify what type of content you’re viewing — which prevents traffic-specific throttling.
How to See Your Own ISP Details
You can look up your ISP’s full technical details — including their ASN, IP ranges, BGP peers, and abuse contact — using the WHOIS tool. Enter your IP address and you’ll see exactly what organization owns your IP block.
How to Hide Your Activity from Your ISP
The most effective ways to limit your ISP’s visibility into your traffic are:
- Use a VPN: A VPN encrypts all your traffic between your device and the VPN server. Your ISP can see you’re connected to a VPN but cannot see where you’re going or what you’re doing. See our guide: does a VPN hide your IP address?
- Use DNS over HTTPS: Encrypts your DNS queries so your ISP can’t see which domains you look up. Available natively in Chrome, Firefox, and Windows 11.
- Use HTTPS everywhere: Most modern browsers already enforce HTTPS. The content of your sessions is encrypted even if the domain isn’t.
- Use Tor: Routes traffic through multiple relays, completely hiding both the destination and your IP from your ISP. Significantly slower than a VPN.
Recommended VPNs for hiding traffic from your ISP
PureVPN — no-logs policy, 6,500+ servers in 78 countries, works well for ISP bypass and throttling circumvention.
IPVanish — owned in the US, strong speeds, unlimited simultaneous connections.
Frequently Asked Questions
Can my ISP see my incognito browsing?
Yes. Incognito mode only prevents your browser from storing history locally. It does nothing to hide your traffic from your ISP, which sits upstream of your browser entirely.
Does my ISP know which websites I visit if I use HTTPS?
Your ISP can see the domains you visit via DNS lookups and SNI (Server Name Indication) in the TLS handshake. The actual content of HTTPS pages is encrypted. Use DNS over HTTPS and a VPN to hide even the domain names.
Can I change my ISP to get more privacy?
Your ISP options are limited by geography. In the US most areas have only one or two broadband providers. Switching ISPs won’t fundamentally change the situation — all ISPs have the same level of access to your unencrypted traffic. A VPN is a more practical solution.