Creating and Maintaining Home Networks
Internet Service Provider (ISP)

http://edu-observatory.org/olli/Networks/ISP.html



INTERNET SERVICE PROVIDER (ISP)

Wikipedia: Internet Service Provider (ISP)
  https://en.wikipedia.org/wiki/Internet_service_provider
  
  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
  Internet.






What's My Apparent IP Address and ISP?
  https://bgp.he.net
  https://browserleaks.com/ip
  https://test-ipv6.com

Test Bandwidth
  https://speedtest.net
  https://speedtest.tds.net
  https://fast.com  (IPv6) (VPN)
 
Download Network Tools
  https://apps.apple.com/us/app/beenettools/id1160138136
  https://apps.apple.com/us/app/he-net-network-tools/id858241710   
  https://play.google.com/store/apps/details?id=net.he.networktools   
   
Test Firewall
  https://www.grc.com/x/ne.dll?bh0bkyd2
  http://www.ipv6scanner.com/cgi-bin/main.py

IPv6 Address Types
  https://www.ripe.net/participate/member-support/lir-basics/ipv6_reference_card.pdf
  https://www.iana.org/assignments/ipv6-unicast-address-assignments/ipv6-unicast-address-assignments.xhtml
IPv4 Address Types
  https://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xhtml



  
  

Wikipedia: Carrier-grade NAT (CGNAT) https://en.wikipedia.org/wiki/Carrier-grade_NAT#Disadvantages Many cell phone carriers (AT&T, Verizon, T-Mobile, etc.) and Some ISPs (Starlink, Metronet) use Carrier-grade NAT as there are not enough IPv4 addresses for all of their customers. From the command line: traceroute -aI -m 2 `curl --connect-timeout 1 -s ipinfo.io/ip` mtr --aslookup --show-ips `curl --connect-timeout 1 -s ipinfo.io/ip` If more than one hop, your IP address is behind a NAT, and/or your first hop is in one of these address ranges: 10.x.x.x (10.0.0.0/8) 16,777,216 172.16.x.x ==> 172.32.x.x (172.16.0.0/12) 1,048,576 192.168.x.x (192.168.0.0/16) 65,536 then you are NAT'd. These are private IP addresses, as defined in RFC 1918. https://www.ripe.net/participate/member-support/lir-basics/ipv6_reference_card.pdf BeeNetTools (App for iOS, iPadOS) Ping, Traceroute, & MTR https://apps.apple.com/us/app/beenettools/id1160138136 open -a "AirPort Utility.app" to demo router's WAN IP address LAN IP address

MOBILE APPS CenturyLink Apps https://apps.apple.com/us/app/my-centurylink/id1015059570 https://play.google.com/store/apps/details?id=com.centurylink.ctl_droid_wrap&hl=en_US&gl=US HughesNet Apps https://apps.apple.com/us/app/hughesnet-mobile/id1097579916 https://play.google.com/store/apps/details?id=com.hughesnet.sa&hl=en_US&gl=US Metronet Apps https://apps.apple.com/us/app/metronet-go/id990753350 https://play.google.com/store/apps/details?id=com.metaswitch.cp.Metronet&hl=en_US&gl=US Mediacom Apps https://apps.apple.com/us/app/mediacomconnect/id527680234 https://play.google.com/store/apps/details?id=com.speechcycle.smartcare.android.mediacom&hl=en&gl=US Starlink Apps https://apps.apple.com/us/app/starlink/id1537177988 https://play.google.com/store/apps/details?id=com.starlink.mobile&hl=en_US&gl=US sam.wormley@gmail.com