Host 0.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 1.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 2.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 3.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 4.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
5.72.132.137.in-addr.arpa domain name pointer scix1.nus.edu.sg.
6.72.132.137.in-addr.arpa domain name pointer nusnet-72-6.dynip.nus.edu.sg.
7.72.132.137.in-addr.arpa domain name pointer nusnet-72-7.dynip.nus.edu.sg.
8.72.132.137.in-addr.arpa domain name pointer nusnet-72-8.dynip.nus.edu.sg.
9.72.132.137.in-addr.arpa domain name pointer nusnet-72-9.dynip.nus.edu.sg.
10.72.132.137.in-addr.arpa domain name pointer nusnet-72-10.dynip.nus.edu.sg.
11.72.132.137.in-addr.arpa domain name pointer nusnet-72-11.dynip.nus.edu.sg.
Host 12.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 13.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 14.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 15.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 16.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 17.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 18.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 19.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 20.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 21.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 22.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 23.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 24.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)
25.72.132.137.in-addr.arpa domain name pointer lagrange.math.nus.edu.sg.
26.72.132.137.in-addr.arpa domain name pointer nusnet-72-26.dynip.nus.edu.sg.
27.72.132.137.in-addr.arpa domain name pointer nusnet-72-27.dynip.nus.edu.sg.
28.72.132.137.in-addr.arpa domain name pointer nusnet-72-28.dynip.nus.edu.sg.
29.72.132.137.in-addr.arpa domain name pointer nusnet-72-29.dynip.nus.edu.sg.
30.72.132.137.in-addr.arpa domain name pointer fourier.math.nus.edu.sg.
31.72.132.137.in-addr.arpa domain name pointer haar.math.nus.edu.sg.
32.72.132.137.in-addr.arpa domain name pointer sophus.math.nus.edu.sg.
33.72.132.137.in-addr.arpa domain name pointer gauss.math.nus.edu.sg.
34.72.132.137.in-addr.arpa domain name pointer nusnet-72-34.dynip.nus.edu.sg.
35.72.132.137.in-addr.arpa domain name pointer sentosa.math.nus.edu.sg.
36.72.132.137.in-addr.arpa domain name pointer changi.math.nus.edu.sg.
37.72.132.137.in-addr.arpa domain name pointer tekong.math.nus.edu.sg.
38.72.132.137.in-addr.arpa domain name pointer bedok.math.nus.edu.sg.
39.72.132.137.in-addr.arpa domain name pointer laser4.math.nus.edu.sg.
40.72.132.137.in-addr.arpa domain name pointer hp1600cm.math.nus.edu.sg.
41.72.132.137.in-addr.arpa domain name pointer ubin.math.nus.edu.sg.
42.72.132.137.in-addr.arpa domain name pointer brani.math.nus.edu.sg.
43.72.132.137.in-addr.arpa domain name pointer cauchy.math.nus.edu.sg.
44.72.132.137.in-addr.arpa domain name pointer kusu.math.nus.edu.sg.
45.72.132.137.in-addr.arpa domain name pointer nusnet-72-45.dynip.nus.edu.sg.
46.72.132.137.in-addr.arpa domain name pointer nusnet-72-46.dynip.nus.edu.sg.
47.72.132.137.in-addr.arpa domain name pointer nusnet-72-47.dynip.nus.edu.sg.
48.72.132.137.in-addr.arpa domain name pointer nusnet-72-48.dynip.nus.edu.sg.
49.72.132.137.in-addr.arpa domain name pointer nusnet-72-49.dynip.nus.edu.sg.
50.72.132.137.in-addr.arpa domain name pointer nusnet-72-50.dynip.nus.edu.sg.
51.72.132.137.in-addr.arpa domain name pointer nusnet-72-51.dynip.nus.edu.sg.
52.72.132.137.in-addr.arpa domain name pointer nusnet-72-52.dynip.nus.edu.sg.
53.72.132.137.in-addr.arpa domain name pointer nusnet-72-53.dynip.nus.edu.sg.
54.72.132.137.in-addr.arpa domain name pointer nusnet-72-54.dynip.nus.edu.sg.
55.72.132.137.in-addr.arpa domain name pointer nusnet-72-55.dynip.nus.edu.sg.
56.72.132.137.in-addr.arpa domain name pointer nusnet-72-56.dynip.nus.edu.sg.
57.72.132.137.in-addr.arpa domain name pointer nusnet-72-57.dynip.nus.edu.sg.
58.72.132.137.in-addr.arpa domain name pointer nusnet-72-58.dynip.nus.edu.sg.
59.72.132.137.in-addr.arpa domain name pointer nusnet-72-59.dynip.nus.edu.sg.
60.72.132.137.in-addr.arpa domain name pointer nusnet-72-60.dynip.nus.edu.sg.
61.72.132.137.in-addr.arpa domain name pointer nusnet-72-61.dynip.nus.edu.sg.
62.72.132.137.in-addr.arpa domain name pointer nusnet-72-62.dynip.nus.edu.sg.
63.72.132.137.in-addr.arpa domain name pointer nusnet-72-63.dynip.nus.edu.sg.
64.72.132.137.in-addr.arpa domain name pointer nusnet-72-64.dynip.nus.edu.sg.
65.72.132.137.in-addr.arpa domain name pointer nusnet-72-65.dynip.nus.edu.sg.
66.72.132.137.in-addr.arpa domain name pointer nusnet-72-66.dynip.nus.edu.sg.
67.72.132.137.in-addr.arpa domain name pointer nusnet-72-67.dynip.nus.edu.sg.
68.72.132.137.in-addr.arpa domain name pointer nusnet-72-68.dynip.nus.edu.sg.
69.72.132.137.in-addr.arpa domain name pointer nusnet-72-69.dynip.nus.edu.sg.
70.72.132.137.in-addr.arpa domain name pointer nusnet-72-70.dynip.nus.edu.sg.
71.72.132.137.in-addr.arpa domain name pointer nusnet-72-71.dynip.nus.edu.sg.
72.72.132.137.in-addr.arpa domain name pointer nusnet-72-72.dynip.nus.edu.sg.
73.72.132.137.in-addr.arpa domain name pointer nusnet-72-73.dynip.nus.edu.sg.
74.72.132.137.in-addr.arpa domain name pointer nusnet-72-74.dynip.nus.edu.sg.
75.72.132.137.in-addr.arpa domain name pointer nusnet-72-75.dynip.nus.edu.sg.
76.72.132.137.in-addr.arpa domain name pointer nusnet-72-76.dynip.nus.edu.sg.
77.72.132.137.in-addr.arpa domain name pointer nusnet-72-77.dynip.nus.edu.sg.
78.72.132.137.in-addr.arpa domain name pointer nusnet-72-78.dynip.nus.edu.sg.
79.72.132.137.in-addr.arpa domain name pointer nusnet-72-79.dynip.nus.edu.sg.
80.72.132.137.in-addr.arpa domain name pointer nusnet-72-80.dynip.nus.edu.sg.
81.72.132.137.in-addr.arpa domain name pointer nusnet-72-81.dynip.nus.edu.sg.
82.72.132.137.in-addr.arpa domain name pointer nusnet-72-82.dynip.nus.edu.sg.
83.72.132.137.in-addr.arpa domain name pointer nusnet-72-83.dynip.nus.edu.sg.
84.72.132.137.in-addr.arpa domain name pointer nusnet-72-84.dynip.nus.edu.sg.
85.72.132.137.in-addr.arpa domain name pointer nusnet-72-85.dynip.nus.edu.sg.
86.72.132.137.in-addr.arpa domain name pointer nusnet-72-86.dynip.nus.edu.sg.
87.72.132.137.in-addr.arpa domain name pointer nusnet-72-87.dynip.nus.edu.sg.
88.72.132.137.in-addr.arpa domain name pointer nusnet-72-88.dynip.nus.edu.sg.
89.72.132.137.in-addr.arpa domain name pointer nusnet-72-89.dynip.nus.edu.sg.
90.72.132.137.in-addr.arpa domain name pointer nusnet-72-90.dynip.nus.edu.sg.
91.72.132.137.in-addr.arpa domain name pointer nusnet-72-91.dynip.nus.edu.sg.
92.72.132.137.in-addr.arpa domain name pointer nusnet-72-92.dynip.nus.edu.sg.
93.72.132.137.in-addr.arpa domain name pointer nusnet-72-93.dynip.nus.edu.sg.
94.72.132.137.in-addr.arpa domain name pointer nusnet-72-94.dynip.nus.edu.sg.
95.72.132.137.in-addr.arpa domain name pointer nusnet-72-95.dynip.nus.edu.sg.
96.72.132.137.in-addr.arpa domain name pointer nusnet-72-96.dynip.nus.edu.sg.
97.72.132.137.in-addr.arpa domain name pointer nusnet-72-97.dynip.nus.edu.sg.
98.72.132.137.in-addr.arpa domain name pointer nusnet-72-98.dynip.nus.edu.sg.
99.72.132.137.in-addr.arpa domain name pointer nusnet-72-99.dynip.nus.edu.sg.
100.72.132.137.in-addr.arpa domain name pointer nusnet-72-100.dynip.nus.edu.sg.
101.72.132.137.in-addr.arpa domain name pointer nusnet-72-101.dynip.nus.edu.sg.
102.72.132.137.in-addr.arpa domain name pointer nusnet-72-102.dynip.nus.edu.sg.
103.72.132.137.in-addr.arpa domain name pointer nusnet-72-103.dynip.nus.edu.sg.
104.72.132.137.in-addr.arpa domain name pointer nusnet-72-104.dynip.nus.edu.sg.
105.72.132.137.in-addr.arpa domain name pointer nusnet-72-105.dynip.nus.edu.sg.
106.72.132.137.in-addr.arpa domain name pointer nusnet-72-106.dynip.nus.edu.sg.
107.72.132.137.in-addr.arpa domain name pointer nusnet-72-107.dynip.nus.edu.sg.
108.72.132.137.in-addr.arpa domain name pointer nusnet-72-108.dynip.nus.edu.sg.
109.72.132.137.in-addr.arpa domain name pointer nusnet-72-109.dynip.nus.edu.sg.
110.72.132.137.in-addr.arpa domain name pointer nusnet-72-110.dynip.nus.edu.sg.
111.72.132.137.in-addr.arpa domain name pointer nusnet-72-111.dynip.nus.edu.sg.
112.72.132.137.in-addr.arpa domain name pointer nusnet-72-112.dynip.nus.edu.sg.
113.72.132.137.in-addr.arpa domain name pointer nusnet-72-113.dynip.nus.edu.sg.
114.72.132.137.in-addr.arpa domain name pointer nusnet-72-114.dynip.nus.edu.sg.
115.72.132.137.in-addr.arpa domain name pointer nusnet-72-115.dynip.nus.edu.sg.
116.72.132.137.in-addr.arpa domain name pointer nusnet-72-116.dynip.nus.edu.sg.
117.72.132.137.in-addr.arpa domain name pointer nusnet-72-117.dynip.nus.edu.sg.
118.72.132.137.in-addr.arpa domain name pointer nusnet-72-118.dynip.nus.edu.sg.
119.72.132.137.in-addr.arpa domain name pointer nusnet-72-119.dynip.nus.edu.sg.
120.72.132.137.in-addr.arpa domain name pointer nusnet-72-120.dynip.nus.edu.sg.
121.72.132.137.in-addr.arpa domain name pointer nusnet-72-121.dynip.nus.edu.sg.
122.72.132.137.in-addr.arpa domain name pointer nusnet-72-122.dynip.nus.edu.sg.
123.72.132.137.in-addr.arpa domain name pointer nusnet-72-123.dynip.nus.edu.sg.
124.72.132.137.in-addr.arpa domain name pointer nusnet-72-124.dynip.nus.edu.sg.
125.72.132.137.in-addr.arpa domain name pointer nusnet-72-125.dynip.nus.edu.sg.
126.72.132.137.in-addr.arpa domain name pointer nusnet-72-126.dynip.nus.edu.sg.
127.72.132.137.in-addr.arpa domain name pointer sudong.math.nus.edu.sg.
128.72.132.137.in-addr.arpa domain name pointer s150001.pc.nus.edu.sg.
129.72.132.137.in-addr.arpa domain name pointer math129.math.nus.edu.sg.
130.72.132.137.in-addr.arpa domain name pointer s150003.pc.nus.edu.sg.
131.72.132.137.in-addr.arpa domain name pointer s150004.pc.nus.edu.sg.
132.72.132.137.in-addr.arpa domain name pointer s150005.pc.nus.edu.sg.
133.72.132.137.in-addr.arpa domain name pointer lie.math.nus.edu.sg.
134.72.132.137.in-addr.arpa domain name pointer s150007.pc.nus.edu.sg.
135.72.132.137.in-addr.arpa domain name pointer s150008.pc.nus.edu.sg.
136.72.132.137.in-addr.arpa domain name pointer howe.math.nus.edu.sg.
137.72.132.137.in-addr.arpa domain name pointer s150010.pc.nus.edu.sg.
138.72.132.137.in-addr.arpa domain name pointer s150011.pc.nus.edu.sg.
139.72.132.137.in-addr.arpa domain name pointer math139.math.nus.edu.sg.
140.72.132.137.in-addr.arpa domain name pointer s150013.pc.nus.edu.sg.
141.72.132.137.in-addr.arpa domain name pointer s150014.pc.nus.edu.sg.
142.72.132.137.in-addr.arpa domain name pointer euclid.math.nus.edu.sg.
143.72.132.137.in-addr.arpa domain name pointer s150016.pc.nus.edu.sg.
144.72.132.137.in-addr.arpa domain name pointer s150017.pc.nus.edu.sg.
145.72.132.137.in-addr.arpa domain name pointer s150018.pc.nus.edu.sg.
146.72.132.137.in-addr.arpa domain name pointer matchenz.math.nus.edu.sg.
147.72.132.137.in-addr.arpa domain name pointer s150020.pc.nus.edu.sg.
148.72.132.137.in-addr.arpa domain name pointer merlin.math.nus.edu.sg.
149.72.132.137.in-addr.arpa domain name pointer s150022.pc.nus.edu.sg.
150.72.132.137.in-addr.arpa domain name pointer s150023.pc.nus.edu.sg.
151.72.132.137.in-addr.arpa domain name pointer s150024.pc.nus.edu.sg.
152.72.132.137.in-addr.arpa domain name pointer s150025.pc.nus.edu.sg.
153.72.132.137.in-addr.arpa domain name pointer s150026.pc.nus.edu.sg.
154.72.132.137.in-addr.arpa domain name pointer s150027.pc.nus.edu.sg.
155.72.132.137.in-addr.arpa domain name pointer s150028.pc.nus.edu.sg.
156.72.132.137.in-addr.arpa domain name pointer s150029.pc.nus.edu.sg.
157.72.132.137.in-addr.arpa domain name pointer s150030.pc.nus.edu.sg.
158.72.132.137.in-addr.arpa domain name pointer s150031.pc.nus.edu.sg.
159.72.132.137.in-addr.arpa domain name pointer abel.math.nus.edu.sg.
160.72.132.137.in-addr.arpa domain name pointer s150033.pc.nus.edu.sg.
161.72.132.137.in-addr.arpa domain name pointer s150034.pc.nus.edu.sg.
162.72.132.137.in-addr.arpa domain name pointer s150035.pc.nus.edu.sg.
163.72.132.137.in-addr.arpa domain name pointer s150036.pc.nus.edu.sg.
164.72.132.137.in-addr.arpa domain name pointer s150037.pc.nus.edu.sg.
165.72.132.137.in-addr.arpa domain name pointer s150038.pc.nus.edu.sg.
166.72.132.137.in-addr.arpa domain name pointer s150039.pc.nus.edu.sg.
167.72.132.137.in-addr.arpa domain name pointer s150040.pc.nus.edu.sg.
168.72.132.137.in-addr.arpa domain name pointer s150041.pc.nus.edu.sg.
169.72.132.137.in-addr.arpa domain name pointer s150042.pc.nus.edu.sg.
170.72.132.137.in-addr.arpa domain name pointer s150043.pc.nus.edu.sg.
171.72.132.137.in-addr.arpa domain name pointer s150044.pc.nus.edu.sg.
172.72.132.137.in-addr.arpa domain name pointer s150045.pc.nus.edu.sg.
173.72.132.137.in-addr.arpa domain name pointer s150046.pc.nus.edu.sg.
174.72.132.137.in-addr.arpa domain name pointer s150047.pc.nus.edu.sg.
175.72.132.137.in-addr.arpa domain name pointer s150048.pc.nus.edu.sg.
176.72.132.137.in-addr.arpa domain name pointer s150049.pc.nus.edu.sg.
177.72.132.137.in-addr.arpa domain name pointer s150050.pc.nus.edu.sg.
178.72.132.137.in-addr.arpa domain name pointer s150051.pc.nus.edu.sg.
179.72.132.137.in-addr.arpa domain name pointer s150052.pc.nus.edu.sg.
180.72.132.137.in-addr.arpa domain name pointer s150053.pc.nus.edu.sg.
181.72.132.137.in-addr.arpa domain name pointer s150054.pc.nus.edu.sg.
182.72.132.137.in-addr.arpa domain name pointer s150055.pc.nus.edu.sg.
183.72.132.137.in-addr.arpa domain name pointer s150056.pc.nus.edu.sg.
184.72.132.137.in-addr.arpa domain name pointer s150057.pc.nus.edu.sg.
185.72.132.137.in-addr.arpa domain name pointer s150058.pc.nus.edu.sg.
186.72.132.137.in-addr.arpa domain name pointer s150059.pc.nus.edu.sg.
187.72.132.137.in-addr.arpa domain name pointer s150060.pc.nus.edu.sg.
188.72.132.137.in-addr.arpa domain name pointer s150061.pc.nus.edu.sg.
189.72.132.137.in-addr.arpa domain name pointer s150062.pc.nus.edu.sg.
190.72.132.137.in-addr.arpa domain name pointer s150063.pc.nus.edu.sg.
191.72.132.137.in-addr.arpa domain name pointer s150064.pc.nus.edu.sg.
192.72.132.137.in-addr.arpa domain name pointer s150065.pc.nus.edu.sg.
193.72.132.137.in-addr.arpa domain name pointer s150066.pc.nus.edu.sg.
194.72.132.137.in-addr.arpa domain name pointer s150067.pc.nus.edu.sg.
195.72.132.137.in-addr.arpa domain name pointer s150068.pc.nus.edu.sg.
196.72.132.137.in-addr.arpa domain name pointer s150069.pc.nus.edu.sg.
197.72.132.137.in-addr.arpa domain name pointer s150070.pc.nus.edu.sg.
198.72.132.137.in-addr.arpa domain name pointer s150071.pc.nus.edu.sg.
199.72.132.137.in-addr.arpa domain name pointer s150072.pc.nus.edu.sg.
200.72.132.137.in-addr.arpa domain name pointer math200.math.nus.edu.sg.
201.72.132.137.in-addr.arpa domain name pointer s150074.pc.nus.edu.sg.
202.72.132.137.in-addr.arpa domain name pointer s150075.pc.nus.edu.sg.
203.72.132.137.in-addr.arpa domain name pointer s150076.pc.nus.edu.sg.
204.72.132.137.in-addr.arpa domain name pointer s150077.pc.nus.edu.sg.
205.72.132.137.in-addr.arpa domain name pointer math205.math.nus.edu.sg.
206.72.132.137.in-addr.arpa domain name pointer s150079.pc.nus.edu.sg.
207.72.132.137.in-addr.arpa domain name pointer fl.math.nus.edu.sg.
208.72.132.137.in-addr.arpa domain name pointer s150081.pc.nus.edu.sg.
209.72.132.137.in-addr.arpa domain name pointer galois.math.nus.edu.sg.
210.72.132.137.in-addr.arpa domain name pointer s150083.pc.nus.edu.sg.
211.72.132.137.in-addr.arpa domain name pointer s150084.pc.nus.edu.sg.
212.72.132.137.in-addr.arpa domain name pointer s150085.pc.nus.edu.sg.
213.72.132.137.in-addr.arpa domain name pointer legendre.math.nus.edu.sg.
214.72.132.137.in-addr.arpa domain name pointer s150087.pc.nus.edu.sg.
215.72.132.137.in-addr.arpa domain name pointer newton.math.nus.edu.sg.
216.72.132.137.in-addr.arpa domain name pointer s150089.pc.nus.edu.sg.
217.72.132.137.in-addr.arpa domain name pointer s150090.pc.nus.edu.sg.
218.72.132.137.in-addr.arpa domain name pointer s150091.pc.nus.edu.sg.
219.72.132.137.in-addr.arpa domain name pointer s150092.pc.nus.edu.sg.
220.72.132.137.in-addr.arpa domain name pointer s150093.pc.nus.edu.sg.
221.72.132.137.in-addr.arpa domain name pointer bonaventure.math.nus.edu.sg.
222.72.132.137.in-addr.arpa domain name pointer s150095.pc.nus.edu.sg.
223.72.132.137.in-addr.arpa domain name pointer s150096.pc.nus.edu.sg.
224.72.132.137.in-addr.arpa domain name pointer s150097.pc.nus.edu.sg.
225.72.132.137.in-addr.arpa domain name pointer euler.math.nus.edu.sg.
226.72.132.137.in-addr.arpa domain name pointer s150099.pc.nus.edu.sg.
227.72.132.137.in-addr.arpa domain name pointer s150100.pc.nus.edu.sg.
228.72.132.137.in-addr.arpa domain name pointer chlorine.science.nus.edu.sg.
229.72.132.137.in-addr.arpa domain name pointer s150102.pc.nus.edu.sg.
230.72.132.137.in-addr.arpa domain name pointer s150103.pc.nus.edu.sg.
231.72.132.137.in-addr.arpa domain name pointer s150104.pc.nus.edu.sg.
232.72.132.137.in-addr.arpa domain name pointer s150105.pc.nus.edu.sg.
233.72.132.137.in-addr.arpa domain name pointer s150106.pc.nus.edu.sg.
234.72.132.137.in-addr.arpa domain name pointer s150107.pc.nus.edu.sg.
235.72.132.137.in-addr.arpa domain name pointer s150108.pc.nus.edu.sg.
236.72.132.137.in-addr.arpa domain name pointer s150109.pc.nus.edu.sg.
237.72.132.137.in-addr.arpa domain name pointer s150110.pc.nus.edu.sg.
238.72.132.137.in-addr.arpa domain name pointer s150111.pc.nus.edu.sg.
239.72.132.137.in-addr.arpa domain name pointer s150112.pc.nus.edu.sg.
240.72.132.137.in-addr.arpa domain name pointer s150113.pc.nus.edu.sg.
241.72.132.137.in-addr.arpa domain name pointer s150114.pc.nus.edu.sg.
242.72.132.137.in-addr.arpa domain name pointer s150115.pc.nus.edu.sg.
243.72.132.137.in-addr.arpa domain name pointer s150116.pc.nus.edu.sg.
244.72.132.137.in-addr.arpa domain name pointer s150117.pc.nus.edu.sg.
245.72.132.137.in-addr.arpa domain name pointer s150118.pc.nus.edu.sg.
246.72.132.137.in-addr.arpa domain name pointer s150119.pc.nus.edu.sg.
247.72.132.137.in-addr.arpa domain name pointer s150120.pc.nus.edu.sg.
248.72.132.137.in-addr.arpa domain name pointer s150121.pc.nus.edu.sg.
249.72.132.137.in-addr.arpa domain name pointer s150122.pc.nus.edu.sg.
250.72.132.137.in-addr.arpa domain name pointer s150123.pc.nus.edu.sg.
251.72.132.137.in-addr.arpa domain name pointer s150124.pc.nus.edu.sg.
252.72.132.137.in-addr.arpa domain name pointer s150125.pc.nus.edu.sg.
253.72.132.137.in-addr.arpa domain name pointer adams.math.nus.edu.sg.
254.72.132.137.in-addr.arpa domain name pointer noether.math.nus.edu.sg.
Host 255.72.132.137.in-addr.arpa not found: 3(NXDOMAIN)