What is my IP address?

Your IP address is a unique number that identifies your device on the internet. ipnow detects and displays your public IPv4 and IPv6 address at the top of this page automatically.

How do I find my IP address?

The fastest way to find your IP address is to open ipnow.dev — your public IP is shown instantly. No app, sign up or technical knowledge required.

What is the difference between IPv4 and IPv6?

IPv4 is the older 32-bit address format (e.g. 99.33.79.49). IPv6 is the newer 128-bit format that provides many more addresses. Many devices now have both.

What is an ASN used for?

ASNs are used for internet routing via BGP (Border Gateway Protocol), security (blocking malicious networks), analytics (distinguishing residential from data center traffic), and network troubleshooting. Every ISP and large network operator has at least one ASN.

How do I look up any ASN?

You can look up any ASN at bgp.he.net or ipinfo.io. Enter an IP address or ASN number to see which organization owns it, the IP ranges it controls, and routing information.

Why does my ASN show a company I don't recognize?

Large ISPs often have multiple subsidiary brands under one ASN. Your brand (e.g. "Xfinity") might appear as its parent company (Comcast) in ASN records. Mobile carriers also use different ASN registrations than their consumer brand names.

Does a VPN change my ASN?

Yes. When connected to a VPN, your visible ASN changes to the VPN provider's ASN. Some streaming and payment services block known VPN ASNs to enforce geographic restrictions or prevent fraud.

What is my ASN?

Your Autonomous System Number (ASN) identifies the network that controls your IP address range. It's shown above in your network details panel.

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Your public IP address

216.73.216.157

IPv6Not available

This is the address that websites, apps and online services see when you connect. ipnow doesn't store or log it.

Location

Network & ISP

Location is estimated from your IP address and may differ from your exact physical location.

Understanding ASNs and internet routing

What an ASN is, how it relates to your ISP, and why it matters for networking and security.

What is an ASN?

An Autonomous System Number (ASN) is a unique identifier assigned to a network that independently routes internet traffic. Large ISPs, universities, content delivery networks, cloud providers (Google AS15169, Amazon AS16509, Cloudflare AS13335), and even large enterprises each have one or more ASNs.

How ASNs keep the internet connected

The internet is made up of thousands of autonomous systems that exchange routing information using BGP (Border Gateway Protocol). Each AS announces which IP address ranges it controls. Routers worldwide use this information to forward your traffic along the most efficient path to its destination.

ASN vs ISP

Your ASN and ISP are closely related but not always identical. Large ISPs operate multiple ASNs for different regions or services. Some ASNs belong entirely to CDNs, cloud providers, or enterprise networks. Your IP's ASN is the specific network block that owns and routes your address.

ASNs in security

Security tools use ASNs to block or allow entire network ranges. Anti-spam systems blocklist known malicious ASNs. Firewall and WAF rules can allow or deny traffic from specific ASNs. Threat intelligence feeds track malicious activity by ASN to quickly identify compromised network ranges.

ASNs and your network privacy

What your ASN reveals about your network and its role in security systems.

What your ASN reveals

Your ASN reveals which organization owns your IP range — typically your ISP or a data center. It is public information used for routing, security, and analytics. Combined with your IP, it helps services identify whether you're on a residential, mobile, or data center connection.

We never log it

ipnow shows no ads and runs no trackers. We never store or log your IP address on our servers. Geolocation and ISP details are fetched from privacy-respecting third-party providers.

ASN and VPNs

When you connect to a VPN, your visible ASN changes to the VPN provider's ASN. Some services (streaming platforms, fraud detection systems) block known VPN ASNs. When connected to a VPN, ipnow will show the VPN's ASN instead of your real ISP's ASN.

Frequently asked questions

Common questions about IP addresses and how ipnow works.

Your ASN (Autonomous System Number) is shown in the network details section above. It identifies the network organization that owns and routes your IP address block — typically your ISP or mobile carrier.