is 0 a valid port number

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
is 0 a valid port number	1.73	1	6523	47	24
is	0.18	0.9	7776	71	2
a	1.31	0.5	2594	92	1
valid	1.07	0.7	4617	39	5
port	1.2	0.4	3889	75	4
number	0.49	0.1	8053	50	6

Keyword	CPC	PCC	Volume	Score
is 0 a valid port number	0.77	0.4	5665	41
is port 0 valid	1.14	0.9	1019	92
is there a port 0	1.95	0.8	3807	18
error: is not a valid port number	0.32	0.8	7808	92
invalid port number 0	1.75	0.2	8822	97
valid port number range	1.33	1	4088	40
is not a valid port	0.62	0.3	8358	42
number is not eligible for port in	1.02	0.1	7222	91
port was not assigned a port number	0.22	0.1	5612	84
valid http port numbers	1.9	0.1	6077	75
port 0.0.0.0	0.76	0.3	4873	74
0.0.0.0:port	1.22	0.4	5830	35
how to know which port is 3.0	1.98	0.3	9565	72
port range not valid	1.45	0.3	6102	82