IP ranges

Common network IP ranges

Pick a carrier, cloud provider or CDN to see the IPv4 and IPv6 ranges it currently announces, with CIDR and start/end IP. Download them as TXT or CSV for firewall allowlists and blocklists. Every network has its own page, with the list written straight into the HTML.

66 networks, grouped by type. Data snapshot: 2026-11-02.

Find a network

Chinese carriers

Cloud and hosting providers

CDNs and major internet companies

International carriers and backbones

What this tool does

One page for every network
Each carrier, cloud provider or CDN, such as China Telecom, AWS or Cloudflare, has its own address with the ranges written straight into the page. Read them, search them, bookmark them or send the link to a colleague.
CIDR and start/end IP together
Every range is shown as a CIDR block with its first and last IP address and the number of addresses. IPv4 and IPv6 are listed separately, so you do not have to convert anything yourself.
TXT and CSV downloads
Each page offers the complete list as TXT (one CIDR per line) or CSV (cidr, version, start_ip, end_ip, addresses), ready for ipset, nginx allow and deny rules, router address lists or a spreadsheet.
Dated snapshots, no live lookups
The lists are snapshots of public BGP announcements stored with the site, and every page shows the snapshot date. What you type in the search box stays in your browser and is never uploaded.

How to use it

Find the network in the list below, or type a name or ASN, for example AWS, Cloudflare or AS4134, in the search box to filter the cards.
Open the network page. The summary shows its ASNs, how many IPv4 and IPv6 prefixes it announces, the total number of IPv4 addresses and the snapshot date.
Read the IPv4 table (the first 500 ranges are shown) and the IPv6 table (the first 100), each row with CIDR, start IP – end IP and address count.
Choose Download TXT or Download CSV for the complete list. The file contains every range, not only the rows shown, so you can import it into a firewall, router or spreadsheet.

What each network page shows

Every network page uses the same fields.

ASN and holder: The autonomous system number or numbers the network announces from, with the holder name from the registry (via RIPEstat). Large organisations often run several ASNs, and all the ones we verified are merged on one page.
IPv4 prefixes: How many separate IPv4 CIDR blocks these ASNs announce in the global routing table. They are counted as announced, so adjacent blocks are not merged.
IPv4 addresses: How many IPv4 addresses all the blocks cover together. A block announced inside a larger announced block is counted once, so the figure is never inflated.
IPv6 prefixes: How many IPv6 CIDR blocks are announced. IPv6 address counts are astronomically large, so the table shows the size of each block as a power of two (2^n) instead of a total.
CIDR and start IP – end IP: The block in CIDR notation, for example 203.0.113.0/24, plus the first and last address it contains, handy for devices that only accept a range.
Snapshot date: The day the list was generated from public BGP data. It is shown on every page and written into the file name of every download.
TXT and CSV files: TXT has one CIDR per line, IPv4 first, with no comment lines. CSV has the columns cidr, version, start_ip, end_ip and addresses, in UTF-8 with a BOM so Excel opens it correctly. Add &family=v4 or &family=v6 to the download link to get only one IP version.

Frequently asked questions

Are these all the IP addresses a company owns?

No. The lists show the prefixes a network currently announces in the public BGP routing table. They can include prefixes brought by customers and leased address space, and they may miss routes that very few peers can see. For authoritative allocation records, query the whois data of the regional internet registries (RIRs).

How often is the data updated?

The lists are snapshots that are regenerated about once a week from RIPEstat, and every page shows its snapshot date. Cloud providers change their ranges often, so for production allowlists also compare with the official range file published by the provider.

Does the page look anything up or upload anything when I search or download?

No. The pages are static, the search box only hides non-matching cards in your browser, and downloads are ready-made files. Nothing you type is uploaded.

Can I use the list as a firewall allowlist or blocklist?

Yes. Import the TXT file into ipset, nftables, an nginx allow or deny include, a router address list or a cloud security group. Long lists, such as AWS with tens of thousands of lines, are better imported as one address set than as individual rules. Keep in mind that cloud and carrier address space also hosts the services of their customers, so blocking a whole network can cut off unrelated sites.

Why does one company have several ASNs?

Large organisations often run their backbone, international transit and cloud business as separate autonomous systems. Each network page merges the ASNs we verified against the registry and shows the holder name of each one.

The network I need is missing, or its list is short. What now?

This is a curated set of common networks, and each network is built from its ASNs. Many carriers spread their address space over provincial or regional ASNs, and a page only contains what its listed ASNs announce. If a network is missing, let us know through support and we will check its ASN before considering it.