1 2; 3 4$TTL 1h 5 6@ IN SOA fileserver.example.com. hostmaster.example.com ( 7 :serial: ;serial (version) 8 3h ;refresh period 9 1h ;retry refresh this often 10 1w ;expiration period 11 1h ;minimum TTL 12 ) 13 14 IN NS fileserver.example.com. 15 IN NS mailserver.example.com. 160 IN PTR main-net.example.com. 171 IN PTR zathras-main.example.com. 182 IN PTR fileserver.example.com. 193 IN PTR mailserver.example.com. 204 IN PTR vector.example.com. 2110 IN PTR staffpc0.example.com. 2211 IN PTR staffpc1.example.com. 2312 IN PTR staffpc2.example.com. 24140 IN PTR dhcp-10-1-1-140.example.com. 25141 IN PTR dhcp-10-1-1-141.example.com. 26142 IN PTR dhcp-10-1-1-142.example.com. 27143 IN PTR dhcp-10-1-1-143.example.com. 28144 IN PTR dhcp-10-1-1-144.example.com. 29145 IN PTR dhcp-10-1-1-145.example.com. 30146 IN PTR dhcp-10-1-1-146.example.com. 31147 IN PTR dhcp-10-1-1-147.example.com. 32148 IN PTR dhcp-10-1-1-148.example.com. 33149 IN PTR dhcp-10-1-1-149.example.com. 34150 IN PTR dhcp-10-1-1-150.example.com. 35151 IN PTR dhcp-10-1-1-151.example.com. 36152 IN PTR dhcp-10-1-1-152.example.com. 37153 IN PTR dhcp-10-1-1-153.example.com. 38154 IN PTR dhcp-10-1-1-154.example.com. 39155 IN PTR dhcp-10-1-1-155.example.com. 40156 IN PTR dhcp-10-1-1-156.example.com. 41157 IN PTR dhcp-10-1-1-157.example.com. 42158 IN PTR dhcp-10-1-1-158.example.com. 43159 IN PTR dhcp-10-1-1-159.example.com. 44160 IN PTR dhcp-10-1-1-160.example.com. 45161 IN PTR dhcp-10-1-1-161.example.com. 46162 IN PTR dhcp-10-1-1-162.example.com. 47163 IN PTR dhcp-10-1-1-163.example.com. 48164 IN PTR dhcp-10-1-1-164.example.com. 49165 IN PTR dhcp-10-1-1-165.example.com. 50166 IN PTR dhcp-10-1-1-166.example.com. 51167 IN PTR dhcp-10-1-1-167.example.com. 52168 IN PTR dhcp-10-1-1-168.example.com. 53169 IN PTR dhcp-10-1-1-169.example.com. 54170 IN PTR dhcp-10-1-1-170.example.com. 55171 IN PTR dhcp-10-1-1-171.example.com. 56172 IN PTR dhcp-10-1-1-172.example.com. 57173 IN PTR dhcp-10-1-1-173.example.com. 58174 IN PTR dhcp-10-1-1-174.example.com. 59175 IN PTR dhcp-10-1-1-175.example.com. 60176 IN PTR dhcp-10-1-1-176.example.com. 61177 IN PTR dhcp-10-1-1-177.example.com. 62178 IN PTR dhcp-10-1-1-178.example.com. 63179 IN PTR dhcp-10-1-1-179.example.com. 64180 IN PTR dhcp-10-1-1-180.example.com. 65181 IN PTR dhcp-10-1-1-181.example.com. 66182 IN PTR dhcp-10-1-1-182.example.com. 67183 IN PTR dhcp-10-1-1-183.example.com. 68184 IN PTR dhcp-10-1-1-184.example.com. 69185 IN PTR dhcp-10-1-1-185.example.com. 70186 IN PTR dhcp-10-1-1-186.example.com. 71187 IN PTR dhcp-10-1-1-187.example.com. 72188 IN PTR dhcp-10-1-1-188.example.com. 73189 IN PTR dhcp-10-1-1-189.example.com. 74190 IN PTR dhcp-10-1-1-190.example.com. 75191 IN PTR dhcp-10-1-1-191.example.com. 76192 IN PTR dhcp-10-1-1-192.example.com. 77193 IN PTR dhcp-10-1-1-193.example.com. 78194 IN PTR dhcp-10-1-1-194.example.com. 79195 IN PTR dhcp-10-1-1-195.example.com. 80196 IN PTR dhcp-10-1-1-196.example.com. 81197 IN PTR dhcp-10-1-1-197.example.com. 82198 IN PTR dhcp-10-1-1-198.example.com. 83199 IN PTR dhcp-10-1-1-199.example.com. 84200 IN PTR dhcp-10-1-1-200.example.com. 85201 IN PTR dhcp-10-1-1-201.example.com. 86202 IN PTR dhcp-10-1-1-202.example.com. 87203 IN PTR dhcp-10-1-1-203.example.com. 88204 IN PTR dhcp-10-1-1-204.example.com. 89205 IN PTR dhcp-10-1-1-205.example.com. 90206 IN PTR dhcp-10-1-1-206.example.com. 91207 IN PTR dhcp-10-1-1-207.example.com. 92208 IN PTR dhcp-10-1-1-208.example.com. 93209 IN PTR dhcp-10-1-1-209.example.com. 94210 IN PTR dhcp-10-1-1-210.example.com. 95211 IN PTR dhcp-10-1-1-211.example.com. 96212 IN PTR dhcp-10-1-1-212.example.com. 97213 IN PTR dhcp-10-1-1-213.example.com. 98214 IN PTR dhcp-10-1-1-214.example.com. 99215 IN PTR dhcp-10-1-1-215.example.com. 100216 IN PTR dhcp-10-1-1-216.example.com. 101217 IN PTR dhcp-10-1-1-217.example.com. 102218 IN PTR dhcp-10-1-1-218.example.com. 103219 IN PTR dhcp-10-1-1-219.example.com. 104220 IN PTR dhcp-10-1-1-220.example.com. 105221 IN PTR dhcp-10-1-1-221.example.com. 106222 IN PTR dhcp-10-1-1-222.example.com. 107223 IN PTR dhcp-10-1-1-223.example.com. 108224 IN PTR dhcp-10-1-1-224.example.com. 109225 IN PTR dhcp-10-1-1-225.example.com. 110226 IN PTR dhcp-10-1-1-226.example.com. 111227 IN PTR dhcp-10-1-1-227.example.com. 112228 IN PTR dhcp-10-1-1-228.example.com. 113229 IN PTR dhcp-10-1-1-229.example.com. 114230 IN PTR dhcp-10-1-1-230.example.com. 115231 IN PTR dhcp-10-1-1-231.example.com. 116232 IN PTR dhcp-10-1-1-232.example.com. 117233 IN PTR dhcp-10-1-1-233.example.com. 118234 IN PTR dhcp-10-1-1-234.example.com. 119235 IN PTR dhcp-10-1-1-235.example.com. 120236 IN PTR dhcp-10-1-1-236.example.com. 121237 IN PTR dhcp-10-1-1-237.example.com. 122238 IN PTR dhcp-10-1-1-238.example.com. 123239 IN PTR dhcp-10-1-1-239.example.com. 124240 IN PTR dhcp-10-1-1-240.example.com. 125241 IN PTR dhcp-10-1-1-241.example.com. 126242 IN PTR dhcp-10-1-1-242.example.com. 127243 IN PTR dhcp-10-1-1-243.example.com. 128244 IN PTR dhcp-10-1-1-244.example.com. 129245 IN PTR dhcp-10-1-1-245.example.com. 130246 IN PTR dhcp-10-1-1-246.example.com. 131247 IN PTR dhcp-10-1-1-247.example.com. 132248 IN PTR dhcp-10-1-1-248.example.com. 133249 IN PTR dhcp-10-1-1-249.example.com. 134250 IN PTR dhcp-10-1-1-250.example.com. 135255 IN PTR main-bcast.example.com. 136