is this the correct txt for an spf record?

xtranetsol.com. IN TXT "v=spf1 ip4:192.168.254.0/24 ip4:66.192.16.101/26 a:web2.winfotec.com mx:scm.xtranetsol.com include:twtelecom.net ~all"

Wayne Plenge
wayne@xtranetsol.com
P - 407-971-2383
F - 407-971-2386