Collection accounts often change hands every six months or so. Debts are assigned and sold to other collectors, so thereâs a strong possibility the collection agency listed on your credit report isnât the agency that's currently collecting on the debt.
Alice decides to message Bob. Alice's phone establishes a connection to the WhatsApp server and it is established that this connection is definitely from Alice's phone. Alice now sends via TCP the following message: For Bob: A giant monster is attacking the Golden Gate Bridge.
Ports are a concept of UDP and TCP. Ping messages are technically referred to as ICMP Echo Request and ICMP Echo Reply which are part of ICMP. ICMP, TCP, and UDP are siblings; they are not based on each other, but are three separate protocols that run on top of IP. Therefore you can not ping a port.What you can do, is use a port scanner like nmap. You can also use telnet onofri.org 80, as suggested in one of the other answers (It will give an error if the port is closed or filtered).orts are a concept of UDP and TCP. Ping messages are technically referred to as ICMP Echo Request and ICMP Echo Reply which are part of ICMP. ICMP, TCP, and UDP are siblings; they are not based on each other, but are three separate protocols that run on top of IP. Therefore you can not ping a port.