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- [root@localhost slaves]# cat apple.com.db nokia.com.db yahoo.com.db
- $ORIGIN .
- $TTL 86400 ; 1 day
- apple.com IN SOA gridmaster-ib.apple.com. hostmaster.apple.com. (
- 2010073743 ; serial
- 1800 ; refresh (30 minutes)
- 900 ; retry (15 minutes)
- 2016000 ; expire (3 weeks 2 days 8 hours)
- 86500 ; minimum (1 day 1 minute 40 seconds)
- )
- NS nserver.euro.apple.com.
- NS nserver.apple.com.
- NS nserver2.apple.com.
- NS nserver3.apple.com.
- NS nserver4.apple.com.
- $ORIGIN .
- $TTL 86400 ; 1 day
- nokia.com IN SOA ns.nokia.com. hostmaster.nokia.com. (
- 2010093158 ; serial
- 7200 ; refresh (2 hours)
- 3600 ; retry (1 hour)
- 1209600 ; expire (2 weeks)
- 1800 ; minimum (30 minutes)
- )
- NS ns.nokia.com.
- NS ns2.nokia.com.
- NS ns3.nokia.com.
- NS ns4.nokia.com.
- NS ns5.nokia.com.
- NS ns6.nokia.com.
- $ORIGIN .
- $TTL 1800 ; 30 minutes
- yahoo.com IN SOA ns1.yahoo.com. hostmaster.yahoo-inc.com. (
- 2011012606 ; serial
- 3600 ; refresh (1 hour)
- 300 ; retry (5 minutes)
- 1814400 ; expire (3 weeks)
- 600 ; minimum (10 minutes)
- )
- $TTL 172800 ; 2 days
- NS ns1.yahoo.com.
- NS ns2.yahoo.com.
- NS ns3.yahoo.com.
- NS ns4.yahoo.com.
- NS ns5.yahoo.com.
- NS ns6.yahoo.com.
- NS ns8.yahoo.com.
- $ORIGIN yahoo.com.
- ns1 A 68.180.131.16
- ns2 A 68.142.255.16
- ns3 A 121.101.152.99
- ns4 A 68.142.196.63
- ns5 A 119.160.247.124
- ns6 A 202.43.223.170
- ns8 A 202.165.104.22
- we can see A Records for all NS servers of yahoo.com. ||| but we don't see A Records of all NS Servers of apple and nokia when we create respective stub zones ||| why is that so?
- [root@localhost slaves]# cat /var/named/internalzones.db
- zone "apple.com" {
- type stub;
- masters { 17.254.0.50; };
- file "slaves/apple.com.db";
- };
- zone "yahoo.com" {
- type stub;
- masters { 68.180.131.16; };
- file "slaves/yahoo.com.db";
- };
- zone "nokia.com" {
- type stub;
- masters { 131.228.20.19; };
- file "slaves/nokia.com.db";
- };
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