INTERNET SERVICE PROVIDER (ISP)
Wikipedia: Internet Service Provider (ISP)
An Internet service provider (ISP) is an organisation that
provides services for accessing, using, or participating in
the Internet. Internet service providers can be organized in
various forms, such as commercial, community-owned,
non-profit, or otherwise privately owned.
Internet services typically provided by ISPs can include
Internet access, Internet transit, domain name registration,
web hosting, Usenet service, and colocation.
An ISP typically serves as a connection or gateway that
provides a user, access to everything available on the
Who is My Current Internet Service Provider?
What is My Current Internet Service Provider Bandwidth/Speed?
Wikipedia: Carrier-grade NAT
Many cell phone carriers (AT&T, Verizon, T-Mobile, etc.) and
Some Fiber Optic ISPs use Carrier-grade NAT as there are not
enough IPv4 addresses for all of their customers.
From the command line:
traceroute -aI `curl --connect-timeout 1 -s ipinfo.io/ip`
If more than one hop, your IP address is behind a NAT.
open -a "AirPort Utility.app" to demo router's
WAN IP address
LAN IP address
If your WAN IP address, as shown on your Router, is:
10.0.0.0 - 10.255.255.255 (10.0.0.0/8) 16,777,216
172.16.0.0 - 172.31.255.255 (172.16.0.0/12) 1,048,576
192.168.0.0 - 192.168.255.255 (192.168.0.0/16) 65,536
then you are NAT'd. These are private IP addresses, as
defined in RFC 1918.
BeeNetTools (App for iOS, iPadOS) Ping, Traceroute, & MTR