Because it's the same route.
	Code:
	Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.
C:\Windows\System32>tracert 199.91.189.25
Tracing route to 199.91.189.25 over a maximum of 30 hops
  1     4 ms     7 ms    10 ms  R6300|DD-WRT [192.168.1.1]
  2     *        *       34 ms  cpe-75-85-32-1.socal.res.rr.com [75.85.32.1]
  3     *        *        *     Request timed out.
  4    23 ms    27 ms    28 ms  tge0-9-0-8.ontrcacp01r.socal.rr.com [72.129.6.16
0]
  5    18 ms    23 ms    28 ms  agg21.lsancarc01r.socal.rr.com [72.129.5.0]
  6    22 ms    25 ms    21 ms  107.14.19.32
  7    17 ms    18 ms    28 ms  107.14.19.138
  8    31 ms    39 ms    38 ms  66.109.9.122
  9   101 ms    92 ms    94 ms  vlan60.csw1.LosAngeles1.Level3.net [4.69.144.62]
 10    94 ms    95 ms   101 ms  ae-62-62.ebr2.LosAngeles1.Level3.net [4.69.137.1
7]
 11    90 ms    99 ms    87 ms  ae-3-3.ebr3.Dallas1.Level3.net [4.69.132.78]
 12   112 ms   118 ms    98 ms  ae-73-73.csw2.Dallas1.Level3.net [4.69.151.145]
 13    93 ms    93 ms   103 ms  ae-71-71.ebr1.Dallas1.Level3.net [4.69.151.138]
 14    92 ms    99 ms   103 ms  ae-14-14.ebr2.Chicago2.Level3.net [4.69.151.117]
 15    98 ms    98 ms   118 ms  ae-1-100.ebr1.Chicago2.Level3.net [4.69.132.113]
 16    89 ms    89 ms   101 ms  ae-6-6.ebr1.Chicago1.Level3.net [4.69.140.189]
 17    96 ms     *       93 ms  ae-10-10.car2.Montreal2.Level3.net [4.69.153.86]
 18    98 ms   108 ms    99 ms  ORMUCO-COMM.car2.Montreal2.Level3.net [4.59.178.
74]
 19    93 ms    99 ms    96 ms  192.34.76.10
 20  1652 ms  1599 ms  1638 ms  199.91.189.242
 21   282 ms   287 ms   282 ms  199.91.189.25
Trace complete.
C:\Windows\System32>
  
Line 20 is Square's problem.