gistfile1.txt

$ dig @ns1.google.com _spf.google.com TXT

; <<>> DiG 9.8.3-P1 <<>> @ns1.google.com _spf.google.com TXT
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42878
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;_spf.google.com.		IN	TXT

;; ANSWER SECTION:
_spf.google.com.	300	IN	TXT	"v=spf1 include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com ~all"

;; Query time: 175 msec
;; SERVER: 216.239.32.10#53(216.239.32.10)
;; WHEN: Fri May 23 17:36:09 2014
;; MSG SIZE  rcvd: 149

rjoc-pro:etailer (master)$ dig @ns1.google.com _netblocks.google.com TXT

; <<>> DiG 9.8.3-P1 <<>> @ns1.google.com _netblocks.google.com TXT
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46243
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;_netblocks.google.com.		IN	TXT

;; ANSWER SECTION:
_netblocks.google.com.	3600	IN	TXT	"v=spf1 ip4:216.239.32.0/19 ip4:64.233.160.0/19 ip4:66.249.80.0/20 ip4:72.14.192.0/18 ip4:209.85.128.0/17 ip4:66.102.0.0/20 ip4:74.125.0.0/16 ip4:64.18.0.0/20 ip4:207.126.144.0/20 ip4:173.194.0.0/16 ~all"

;; Query time: 164 msec
;; SERVER: 216.239.32.10#53(216.239.32.10)
;; WHEN: Fri May 23 17:36:21 2014
;; MSG SIZE  rcvd: 254

rjoc-pro:etailer (master)$