Robtex

Up: 203.209.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 203.209.48.0/23
Down right: 203.209.50.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.209.48.27	A+PTR	it-lab-software-27.it-lab-software.mut.ac.th
203.209.48.33	A+PTR	it-lab-software-33.it-lab-software.mut.ac.th
203.209.48.34	A+PTR	it-lab-software-34.it-lab-software.mut.ac.th
203.209.48.135	A+PTR	it-lab-multimedia-7.it-lab-multimedia.mut.ac.th
203.209.48.147	A+PTR	it-lab-multimedia-19.it-lab-multimedia.mut.ac.th
203.209.48.148	A+PTR	it-lab-multimedia-20.it-lab-multimedia.mut.ac.th
203.209.48.247	PTR	it-lab-multimedia-119.it-lab-multimedia.mut.ac.th
203.209.49.3	PTR	it-lab-network-3.it-lab-network.mut.ac.th
203.209.49.10	PTR	it-lab-network-10.it-lab-network.mut.ac.th
203.209.49.14	A	it-lab-network-14.it-lab-network.mut.ac.th
203.209.49.15	PTR	it-lab-network-15.it-lab-network.mut.ac.th
203.209.49.17	A+PTR	it-lab-network-17.it-lab-network.mut.ac.th
203.209.49.30	A+PTR	it-lab-network-30.it-lab-network.mut.ac.th
203.209.49.32	PTR	it-lab-network-32.it-lab-network.mut.ac.th
203.209.49.36	PTR	it-lab-network-36.it-lab-network.mut.ac.th
203.209.49.37	PTR	it-lab-network-37.it-lab-network.mut.ac.th
203.209.49.39	A	it-lab-network-39.it-lab-network.mut.ac.th
203.209.49.47	PTR	it-lab-network-47.it-lab-network.mut.ac.th
203.209.49.49	A+PTR	it-lab-network-49.it-lab-network.mut.ac.th
203.209.49.50	PTR	it-lab-network-50.it-lab-network.mut.ac.th
203.209.49.51	A+PTR	it-lab-network-51.it-lab-network.mut.ac.th
203.209.49.54	PTR	it-lab-network-54.it-lab-network.mut.ac.th
203.209.49.62	PTR	it-lab-network-62.it-lab-network.mut.ac.th
203.209.49.64	PTR	it-lab-network-64.it-lab-network.mut.ac.th
203.209.49.73	A+PTR	it-lab-network-73.it-lab-network.mut.ac.th
203.209.49.79	A+PTR	it-lab-network-79.it-lab-network.mut.ac.th
203.209.49.84	PTR	it-lab-network-84.it-lab-network.mut.ac.th
203.209.49.88	A+PTR	it-lab-network-88.it-lab-network.mut.ac.th
203.209.49.92	A+PTR	it-lab-network-92.it-lab-network.mut.ac.th
203.209.49.100	A+PTR	it-lab-network-100.it-lab-network.mut.ac.th
203.209.49.102	A+PTR	it-lab-network-102.it-lab-network.mut.ac.th
203.209.49.114	A+PTR	it-lab-network-114.it-lab-network.mut.ac.th
203.209.49.115	A+PTR	it-lab-network-115.it-lab-network.mut.ac.th
203.209.49.124	PTR	it-lab-network-124.it-lab-network.mut.ac.th
203.209.49.127	PTR	it-lab-network-127.it-lab-network.mut.ac.th
203.209.49.128	PTR	it-lab-network-128.it-lab-network.mut.ac.th
203.209.49.139	A+PTR	it-lab-network-139.it-lab-network.mut.ac.th
203.209.49.141	A+PTR	it-lab-network-141.it-lab-network.mut.ac.th
203.209.49.146	A+PTR	it-lab-network-146.it-lab-network.mut.ac.th
203.209.49.149	PTR	it-lab-network-149.it-lab-network.mut.ac.th
203.209.49.151	PTR	it-lab-network-151.it-lab-network.mut.ac.th
203.209.49.153	A+PTR	it-lab-network-153.it-lab-network.mut.ac.th
203.209.49.154	A+PTR	it-lab-network-154.it-lab-network.mut.ac.th
203.209.49.155	PTR	it-lab-network-155.it-lab-network.mut.ac.th
203.209.49.158	PTR	it-lab-network-158.it-lab-network.mut.ac.th
203.209.49.162	A+PTR	it-lab-network-162.it-lab-network.mut.ac.th
203.209.49.177	PTR	it-lab-network-177.it-lab-network.mut.ac.th
203.209.49.202	PTR	it-lab-network-202.it-lab-network.mut.ac.th
203.209.49.204	A+PTR	it-lab-network-204.it-lab-network.mut.ac.th
203.209.49.216	A	it-lab-network-216.it-lab-network.mut.ac.th
203.209.49.221	A+PTR	it-lab-network-221.it-lab-network.mut.ac.th
203.209.49.228	PTR	it-lab-network-228.it-lab-network.mut.ac.th
203.209.49.232	A+PTR	it-lab-network-232.it-lab-network.mut.ac.th
203.209.49.245	A	it-lab-network-245.it-lab-network.mut.ac.th
203.209.49.247	PTR	it-lab-network-247.it-lab-network.mut.ac.th
203.209.50.75	PTR	it-lab-training-11.it-lab-training.mut.ac.th
203.209.50.82	A+PTR	it-lab-training-18.it-lab-training.mut.ac.th
203.209.50.88	A	it-lab-training-24.it-lab-training.mut.ac.th
203.209.50.100	A	it-lab-training-36.it-lab-training.mut.ac.th
203.209.50.117	A	it-lab-training-53.it-lab-training.mut.ac.th
203.209.50.125	A+PTR	it-lab-training-61.it-lab-training.mut.ac.th
203.209.50.162	PTR	it-lab-staff-2.it-lab-staff.mut.ac.th
203.209.50.162	PTR	alumni.it.mut.ac.th
203.209.50.162	A+PTR	www.it.mut.ac.th
203.209.50.165	A+PTR	it-lab-staff-5.it-lab-staff.mut.ac.th
203.209.50.167	A+PTR	cheqa.mut.ac.th
203.209.50.167	PTR	www.cheqa.mut.ac.th
203.209.50.167	PTR	it-lab-staff-7.it-lab-staff.mut.ac.th
203.209.50.168	A	it-lab-staff-8.it-lab-staff.mut.ac.th
203.209.51.12	A	it-12.it.mut.ac.th
203.209.51.27	A	it-27.it.mut.ac.th
203.209.51.41	A	it-41.it.mut.ac.th
203.209.51.46	A+PTR	it-46.it.mut.ac.th
203.209.51.48	A	it-48.it.mut.ac.th
203.209.51.195	PTR	msit-3.msit.mut.ac.th
203.209.51.198	A	olap-eaht.com
203.209.51.200	A	www.e-aht.com
203.209.51.200	A	e-aht.com
203.209.51.201	PTR	msit-9.msit.mut.ac.th
203.209.51.201	A	www.training.mut.ac.th
203.209.51.222	PTR	msit-30.msit.mut.ac.th