Host 0.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
1.115.59.128.in-addr.arpa domain name pointer cc-edge-1-vlan112-3.net.columbia.edu.
Host 2.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 3.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 4.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 5.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
6.115.59.128.in-addr.arpa domain name pointer cumulus15.chem.columbia.edu.
7.115.59.128.in-addr.arpa domain name pointer opti400f.ais.columbia.edu.
8.115.59.128.in-addr.arpa domain name pointer imacjacs.chem.columbia.edu.
Host 9.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
10.115.59.128.in-addr.arpa domain name pointer havemeyer-env.facil.columbia.edu.
11.115.59.128.in-addr.arpa domain name pointer asda-1.chem.columbia.edu.
12.115.59.128.in-addr.arpa domain name pointer cumulus17.chem.columbia.edu.
13.115.59.128.in-addr.arpa domain name pointer cumulus18.chem.columbia.edu.
14.115.59.128.in-addr.arpa domain name pointer ml9.chem.columbia.edu.
15.115.59.128.in-addr.arpa domain name pointer havemeyer209podmac.cc.columbia.edu.
16.115.59.128.in-addr.arpa domain name pointer lindpc.chem.columbia.edu.
17.115.59.128.in-addr.arpa domain name pointer hp4000tn.ais.columbia.edu.
18.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-18.dyn.columbia.edu.
19.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-19.dyn.columbia.edu.
20.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-20.dyn.columbia.edu.
21.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-21.dyn.columbia.edu.
22.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-22.dyn.columbia.edu.
23.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-23.dyn.columbia.edu.
24.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-24.dyn.columbia.edu.
25.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-25.dyn.columbia.edu.
26.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-26.dyn.columbia.edu.
27.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-27.dyn.columbia.edu.
28.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-28.dyn.columbia.edu.
29.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-29.dyn.columbia.edu.
30.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-30.dyn.columbia.edu.
31.115.59.128.in-addr.arpa domain name pointer dyn-128-59-115-31.dyn.columbia.edu.
32.115.59.128.in-addr.arpa domain name pointer homer.chem.columbia.edu.
33.115.59.128.in-addr.arpa domain name pointer chemprinter.chem.columbia.edu.
34.115.59.128.in-addr.arpa domain name pointer ocsconfroom.ocs.columbia.edu.
35.115.59.128.in-addr.arpa domain name pointer turro34.chem.columbia.edu.
36.115.59.128.in-addr.arpa domain name pointer trainer6.ocs.columbia.edu.
37.115.59.128.in-addr.arpa domain name pointer lizmac.chem.columbia.edu.
38.115.59.128.in-addr.arpa domain name pointer gradadmissionmac.chem.columbia.edu.
39.115.59.128.in-addr.arpa domain name pointer workstudymac.chem.columbia.edu.
40.115.59.128.in-addr.arpa domain name pointer slidemakermac.chem.columbia.edu.
41.115.59.128.in-addr.arpa domain name pointer busmgrpc.chem.columbia.edu.
42.115.59.128.in-addr.arpa domain name pointer eisenthalpc1.chem.columbia.edu.
43.115.59.128.in-addr.arpa domain name pointer marge.chem.columbia.edu.
44.115.59.128.in-addr.arpa domain name pointer business-pc1.chem.columbia.edu.
45.115.59.128.in-addr.arpa domain name pointer samg4.chem.columbia.edu.
46.115.59.128.in-addr.arpa domain name pointer dirbudgetpc.chem.columbia.edu.
47.115.59.128.in-addr.arpa domain name pointer norton07.chem.columbia.edu.
48.115.59.128.in-addr.arpa domain name pointer chem-lj4m.chem.columbia.edu.
49.115.59.128.in-addr.arpa domain name pointer mac19.chem.columbia.edu.
50.115.59.128.in-addr.arpa domain name pointer dakar.chem.columbia.edu.
51.115.59.128.in-addr.arpa domain name pointer dali.chem.columbia.edu.
52.115.59.128.in-addr.arpa domain name pointer hav117a.chem.columbia.edu.
53.115.59.128.in-addr.arpa domain name pointer cumulus19.chem.columbia.edu.
54.115.59.128.in-addr.arpa domain name pointer hav117c.chem.columbia.edu.
55.115.59.128.in-addr.arpa domain name pointer hav117d.chem.columbia.edu.
56.115.59.128.in-addr.arpa domain name pointer hav117e.chem.columbia.edu.
57.115.59.128.in-addr.arpa domain name pointer hav-b-1-ups.net.columbia.edu.
58.115.59.128.in-addr.arpa domain name pointer hav240b.chem.columbia.edu.
59.115.59.128.in-addr.arpa domain name pointer hav240c.chem.columbia.edu.
Host 60.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 61.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 62.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
63.115.59.128.in-addr.arpa domain name pointer hav318a.chem.columbia.edu.
64.115.59.128.in-addr.arpa domain name pointer hav318b.chem.columbia.edu.
Host 65.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 66.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 67.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
68.115.59.128.in-addr.arpa domain name pointer hav330d.chem.columbia.edu.
Host 69.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
70.115.59.128.in-addr.arpa domain name pointer fineserver.chem.columbia.edu.
71.115.59.128.in-addr.arpa domain name pointer hav338.chem.columbia.edu.
Host 72.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 73.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 74.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
75.115.59.128.in-addr.arpa domain name pointer hav348.chem.columbia.edu.
Host 76.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 77.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
78.115.59.128.in-addr.arpa domain name pointer hav418a.chem.columbia.edu.
79.115.59.128.in-addr.arpa domain name pointer hav418b.chem.columbia.edu.
80.115.59.128.in-addr.arpa domain name pointer hav418c.chem.columbia.edu.
81.115.59.128.in-addr.arpa domain name pointer cumulus20.chem.columbia.edu.
82.115.59.128.in-addr.arpa domain name pointer hav544a.chem.columbia.edu.
83.115.59.128.in-addr.arpa domain name pointer cumulus21.chem.columbia.edu.
84.115.59.128.in-addr.arpa domain name pointer hav608a.chem.columbia.edu.
85.115.59.128.in-addr.arpa domain name pointer hav608b.chem.columbia.edu.
86.115.59.128.in-addr.arpa domain name pointer hav608c.chem.columbia.edu.
87.115.59.128.in-addr.arpa domain name pointer hav608d.chem.columbia.edu.
88.115.59.128.in-addr.arpa domain name pointer hav616.chem.columbia.edu.
89.115.59.128.in-addr.arpa domain name pointer norton08.chem.columbia.edu.
90.115.59.128.in-addr.arpa domain name pointer norton09.chem.columbia.edu.
91.115.59.128.in-addr.arpa domain name pointer maggie.chem.columbia.edu.
92.115.59.128.in-addr.arpa domain name pointer eilat.chem.columbia.edu.
93.115.59.128.in-addr.arpa domain name pointer tripoli.chem.columbia.edu.
94.115.59.128.in-addr.arpa domain name pointer stampee.chem.columbia.edu.
95.115.59.128.in-addr.arpa domain name pointer stm.chem.columbia.edu.
Host 96.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 97.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
98.115.59.128.in-addr.arpa domain name pointer breswin2.chem.columbia.edu.
99.115.59.128.in-addr.arpa domain name pointer nuckollslaptop.chem.columbia.edu.
100.115.59.128.in-addr.arpa domain name pointer havemeyer.test.columbia.edu.
101.115.59.128.in-addr.arpa domain name pointer dynamic-115-101.dyn.columbia.edu.
102.115.59.128.in-addr.arpa domain name pointer dynamic-115-102.dyn.columbia.edu.
103.115.59.128.in-addr.arpa domain name pointer dynamic-115-103.dyn.columbia.edu.
104.115.59.128.in-addr.arpa domain name pointer dynamic-115-104.dyn.columbia.edu.
105.115.59.128.in-addr.arpa domain name pointer dynamic-115-105.dyn.columbia.edu.
106.115.59.128.in-addr.arpa domain name pointer dynamic-115-106.dyn.columbia.edu.
107.115.59.128.in-addr.arpa domain name pointer dynamic-115-107.dyn.columbia.edu.
108.115.59.128.in-addr.arpa domain name pointer dynamic-115-108.dyn.columbia.edu.
109.115.59.128.in-addr.arpa domain name pointer dynamic-115-109.dyn.columbia.edu.
110.115.59.128.in-addr.arpa domain name pointer dynamic-115-110.dyn.columbia.edu.
111.115.59.128.in-addr.arpa domain name pointer dynamic-115-111.dyn.columbia.edu.
112.115.59.128.in-addr.arpa domain name pointer dynamic-115-112.dyn.columbia.edu.
113.115.59.128.in-addr.arpa domain name pointer dynamic-115-113.dyn.columbia.edu.
114.115.59.128.in-addr.arpa domain name pointer dynamic-115-114.dyn.columbia.edu.
115.115.59.128.in-addr.arpa domain name pointer dynamic-115-115.dyn.columbia.edu.
116.115.59.128.in-addr.arpa domain name pointer dynamic-115-116.dyn.columbia.edu.
117.115.59.128.in-addr.arpa domain name pointer dynamic-115-117.dyn.columbia.edu.
118.115.59.128.in-addr.arpa domain name pointer dynamic-115-118.dyn.columbia.edu.
119.115.59.128.in-addr.arpa domain name pointer dynamic-115-119.dyn.columbia.edu.
120.115.59.128.in-addr.arpa domain name pointer dynamic-115-120.dyn.columbia.edu.
121.115.59.128.in-addr.arpa domain name pointer dynamic-115-121.dyn.columbia.edu.
122.115.59.128.in-addr.arpa domain name pointer dynamic-115-122.dyn.columbia.edu.
123.115.59.128.in-addr.arpa domain name pointer dynamic-115-123.dyn.columbia.edu.
124.115.59.128.in-addr.arpa domain name pointer dynamic-115-124.dyn.columbia.edu.
125.115.59.128.in-addr.arpa domain name pointer dynamic-115-125.dyn.columbia.edu.
126.115.59.128.in-addr.arpa domain name pointer dynamic-115-126.dyn.columbia.edu.
127.115.59.128.in-addr.arpa domain name pointer dynamic-115-127.dyn.columbia.edu.
128.115.59.128.in-addr.arpa domain name pointer dynamic-115-128.dyn.columbia.edu.
129.115.59.128.in-addr.arpa domain name pointer dynamic-115-129.dyn.columbia.edu.
130.115.59.128.in-addr.arpa domain name pointer dynamic-115-130.dyn.columbia.edu.
131.115.59.128.in-addr.arpa domain name pointer dynamic-115-131.dyn.columbia.edu.
132.115.59.128.in-addr.arpa domain name pointer dynamic-115-132.dyn.columbia.edu.
133.115.59.128.in-addr.arpa domain name pointer dynamic-115-133.dyn.columbia.edu.
134.115.59.128.in-addr.arpa domain name pointer dynamic-115-134.dyn.columbia.edu.
135.115.59.128.in-addr.arpa domain name pointer dynamic-115-135.dyn.columbia.edu.
136.115.59.128.in-addr.arpa domain name pointer dynamic-115-136.dyn.columbia.edu.
137.115.59.128.in-addr.arpa domain name pointer dynamic-115-137.dyn.columbia.edu.
138.115.59.128.in-addr.arpa domain name pointer dynamic-115-138.dyn.columbia.edu.
139.115.59.128.in-addr.arpa domain name pointer dynamic-115-139.dyn.columbia.edu.
140.115.59.128.in-addr.arpa domain name pointer dynamic-115-140.dyn.columbia.edu.
141.115.59.128.in-addr.arpa domain name pointer dynamic-115-141.dyn.columbia.edu.
142.115.59.128.in-addr.arpa domain name pointer dynamic-115-142.dyn.columbia.edu.
143.115.59.128.in-addr.arpa domain name pointer dynamic-115-143.dyn.columbia.edu.
144.115.59.128.in-addr.arpa domain name pointer dynamic-115-144.dyn.columbia.edu.
145.115.59.128.in-addr.arpa domain name pointer dynamic-115-145.dyn.columbia.edu.
146.115.59.128.in-addr.arpa domain name pointer dynamic-115-146.dyn.columbia.edu.
147.115.59.128.in-addr.arpa domain name pointer dynamic-115-147.dyn.columbia.edu.
148.115.59.128.in-addr.arpa domain name pointer dynamic-115-148.dyn.columbia.edu.
149.115.59.128.in-addr.arpa domain name pointer dynamic-115-149.dyn.columbia.edu.
150.115.59.128.in-addr.arpa domain name pointer dynamic-115-150.dyn.columbia.edu.
151.115.59.128.in-addr.arpa domain name pointer dynamic-115-151.dyn.columbia.edu.
152.115.59.128.in-addr.arpa domain name pointer dynamic-115-152.dyn.columbia.edu.
153.115.59.128.in-addr.arpa domain name pointer dynamic-115-153.dyn.columbia.edu.
154.115.59.128.in-addr.arpa domain name pointer dynamic-115-154.dyn.columbia.edu.
155.115.59.128.in-addr.arpa domain name pointer dynamic-115-155.dyn.columbia.edu.
156.115.59.128.in-addr.arpa domain name pointer dynamic-115-156.dyn.columbia.edu.
157.115.59.128.in-addr.arpa domain name pointer dynamic-115-157.dyn.columbia.edu.
158.115.59.128.in-addr.arpa domain name pointer dynamic-115-158.dyn.columbia.edu.
159.115.59.128.in-addr.arpa domain name pointer dynamic-115-159.dyn.columbia.edu.
160.115.59.128.in-addr.arpa domain name pointer dynamic-115-160.dyn.columbia.edu.
161.115.59.128.in-addr.arpa domain name pointer dynamic-115-161.dyn.columbia.edu.
162.115.59.128.in-addr.arpa domain name pointer dynamic-115-162.dyn.columbia.edu.
163.115.59.128.in-addr.arpa domain name pointer dynamic-115-163.dyn.columbia.edu.
164.115.59.128.in-addr.arpa domain name pointer dynamic-115-164.dyn.columbia.edu.
165.115.59.128.in-addr.arpa domain name pointer dynamic-115-165.dyn.columbia.edu.
166.115.59.128.in-addr.arpa domain name pointer dynamic-115-166.dyn.columbia.edu.
167.115.59.128.in-addr.arpa domain name pointer dynamic-115-167.dyn.columbia.edu.
168.115.59.128.in-addr.arpa domain name pointer dynamic-115-168.dyn.columbia.edu.
169.115.59.128.in-addr.arpa domain name pointer dynamic-115-169.dyn.columbia.edu.
170.115.59.128.in-addr.arpa domain name pointer dynamic-115-170.dyn.columbia.edu.
171.115.59.128.in-addr.arpa domain name pointer dynamic-115-171.dyn.columbia.edu.
172.115.59.128.in-addr.arpa domain name pointer dynamic-115-172.dyn.columbia.edu.
173.115.59.128.in-addr.arpa domain name pointer dynamic-115-173.dyn.columbia.edu.
174.115.59.128.in-addr.arpa domain name pointer dynamic-115-174.dyn.columbia.edu.
175.115.59.128.in-addr.arpa domain name pointer dynamic-115-175.dyn.columbia.edu.
176.115.59.128.in-addr.arpa domain name pointer dynamic-115-176.dyn.columbia.edu.
177.115.59.128.in-addr.arpa domain name pointer dynamic-115-177.dyn.columbia.edu.
178.115.59.128.in-addr.arpa domain name pointer dynamic-115-178.dyn.columbia.edu.
179.115.59.128.in-addr.arpa domain name pointer dynamic-115-179.dyn.columbia.edu.
180.115.59.128.in-addr.arpa domain name pointer dynamic-115-180.dyn.columbia.edu.
181.115.59.128.in-addr.arpa domain name pointer dynamic-115-181.dyn.columbia.edu.
182.115.59.128.in-addr.arpa domain name pointer dynamic-115-182.dyn.columbia.edu.
183.115.59.128.in-addr.arpa domain name pointer dynamic-115-183.dyn.columbia.edu.
184.115.59.128.in-addr.arpa domain name pointer dynamic-115-184.dyn.columbia.edu.
185.115.59.128.in-addr.arpa domain name pointer dynamic-115-185.dyn.columbia.edu.
186.115.59.128.in-addr.arpa domain name pointer dynamic-115-186.dyn.columbia.edu.
187.115.59.128.in-addr.arpa domain name pointer dynamic-115-187.dyn.columbia.edu.
188.115.59.128.in-addr.arpa domain name pointer dynamic-115-188.dyn.columbia.edu.
189.115.59.128.in-addr.arpa domain name pointer dynamic-115-189.dyn.columbia.edu.
190.115.59.128.in-addr.arpa domain name pointer dynamic-115-190.dyn.columbia.edu.
191.115.59.128.in-addr.arpa domain name pointer dynamic-115-191.dyn.columbia.edu.
192.115.59.128.in-addr.arpa domain name pointer dynamic-115-192.dyn.columbia.edu.
193.115.59.128.in-addr.arpa domain name pointer dynamic-115-193.dyn.columbia.edu.
194.115.59.128.in-addr.arpa domain name pointer dynamic-115-194.dyn.columbia.edu.
195.115.59.128.in-addr.arpa domain name pointer dynamic-115-195.dyn.columbia.edu.
196.115.59.128.in-addr.arpa domain name pointer dynamic-115-196.dyn.columbia.edu.
197.115.59.128.in-addr.arpa domain name pointer dynamic-115-197.dyn.columbia.edu.
198.115.59.128.in-addr.arpa domain name pointer dynamic-115-198.dyn.columbia.edu.
199.115.59.128.in-addr.arpa domain name pointer dynamic-115-199.dyn.columbia.edu.
200.115.59.128.in-addr.arpa domain name pointer dynamic-115-200.dyn.columbia.edu.
201.115.59.128.in-addr.arpa domain name pointer dynamic-115-201.dyn.columbia.edu.
202.115.59.128.in-addr.arpa domain name pointer dynamic-115-202.dyn.columbia.edu.
203.115.59.128.in-addr.arpa domain name pointer dynamic-115-203.dyn.columbia.edu.
204.115.59.128.in-addr.arpa domain name pointer dynamic-115-204.dyn.columbia.edu.
205.115.59.128.in-addr.arpa domain name pointer dynamic-115-205.dyn.columbia.edu.
206.115.59.128.in-addr.arpa domain name pointer dynamic-115-206.dyn.columbia.edu.
207.115.59.128.in-addr.arpa domain name pointer dynamic-115-207.dyn.columbia.edu.
208.115.59.128.in-addr.arpa domain name pointer dynamic-115-208.dyn.columbia.edu.
209.115.59.128.in-addr.arpa domain name pointer dynamic-115-209.dyn.columbia.edu.
210.115.59.128.in-addr.arpa domain name pointer dynamic-115-210.dyn.columbia.edu.
211.115.59.128.in-addr.arpa domain name pointer dynamic-115-211.dyn.columbia.edu.
212.115.59.128.in-addr.arpa domain name pointer dynamic-115-212.dyn.columbia.edu.
213.115.59.128.in-addr.arpa domain name pointer dynamic-115-213.dyn.columbia.edu.
214.115.59.128.in-addr.arpa domain name pointer dynamic-115-214.dyn.columbia.edu.
215.115.59.128.in-addr.arpa domain name pointer alexa.chem.columbia.edu.
Host 216.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 217.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 218.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
219.115.59.128.in-addr.arpa domain name pointer canada.chem.columbia.edu.
Host 220.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 221.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
222.115.59.128.in-addr.arpa domain name pointer nuckolls.chem.columbia.edu.
223.115.59.128.in-addr.arpa domain name pointer cumulus22.chem.columbia.edu.
224.115.59.128.in-addr.arpa domain name pointer brus2000.chem.columbia.edu.
225.115.59.128.in-addr.arpa domain name pointer hav-2-2.net.columbia.edu.
226.115.59.128.in-addr.arpa domain name pointer khronos.chem.columbia.edu.
227.115.59.128.in-addr.arpa domain name pointer busofcgateway.chem.columbia.edu.
228.115.59.128.in-addr.arpa domain name pointer cumulus23.chem.columbia.edu.
229.115.59.128.in-addr.arpa domain name pointer cumulus24.chem.columbia.edu.
230.115.59.128.in-addr.arpa domain name pointer acs01.chem.columbia.edu.
Host 231.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
232.115.59.128.in-addr.arpa domain name pointer acs03.chem.columbia.edu.
233.115.59.128.in-addr.arpa domain name pointer acs04.chem.columbia.edu.
234.115.59.128.in-addr.arpa domain name pointer cornishg3laptop.chem.columbia.edu.
235.115.59.128.in-addr.arpa domain name pointer lizr.chem.columbia.edu.
236.115.59.128.in-addr.arpa domain name pointer flanders.chem.columbia.edu.
Host 237.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
238.115.59.128.in-addr.arpa domain name pointer mainz.chem.columbia.edu.
239.115.59.128.in-addr.arpa domain name pointer langley.chem.columbia.edu.
Host 240.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
241.115.59.128.in-addr.arpa domain name pointer odessa.chem.columbia.edu.
Host 242.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
Host 243.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
244.115.59.128.in-addr.arpa domain name pointer hav-b-3.net.columbia.edu.
245.115.59.128.in-addr.arpa domain name pointer chem-5-1.net.columbia.edu.
Host 246.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)
247.115.59.128.in-addr.arpa domain name pointer hav-2-1.net.columbia.edu.
248.115.59.128.in-addr.arpa domain name pointer hav-5-1-ups.net.columbia.edu.
249.115.59.128.in-addr.arpa domain name pointer opti400d.ais.columbia.edu.
250.115.59.128.in-addr.arpa domain name pointer opti400e.ais.columbia.edu.
251.115.59.128.in-addr.arpa domain name pointer hav-5-1.net.columbia.edu.
252.115.59.128.in-addr.arpa domain name pointer hav-3-1.net.columbia.edu.
253.115.59.128.in-addr.arpa domain name pointer hav-3-2.net.columbia.edu.
254.115.59.128.in-addr.arpa domain name pointer hav-b-1.net.columbia.edu.
Host 255.115.59.128.in-addr.arpa not found: 3(NXDOMAIN)