Commonly train number starting form those numbers (First Three number) belongs to
....
101 konkan railway ( Ratnagiri div. )
102 Konkan railway ( Karwar div. )
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110...
more...

Mumbai CST & pune div.
111 Jhansi div.
112 Jabalpur div.
113 Solapur Div
114 Jabalpur , Nagpur & Bhusal div.
116 Jabalpur div.
117 Jabalpur div.
....
120 Satabdi & jansatabdi
121 OLD CR ( now CR & WCR , NCR jhansi div. )
122 alloted by RB on spl request of zone
123 Old ER ( ER , ECR - danapur , dhanbad , MGS div.)
124 old NR ( now NR , NCR ALD div , NWR bikaner & jodhpur div.)
125 NFR & old NER ( NER & ECR sonepur & samastipur div )
126 old SR ( SR & SWR Bengalore & mysore div.)
127 old SCR ( SCR & SWR hubli div.)
128 old SER ( now SER , ECoR & SECR )
129 old WR ( now WR , NWR Jaipur & ajmer div. )
....
130 Howrah div.
131 Sealdah div.
132 Danapur div.
133 Dhanbad div.
134 Malda town div.
135 Assansol div.
136 Mughalsarai div.
....
140 Delhi div.
141 Allahdabad div.
142 Lucknow NR div.
143 Moradabad div.
X44 Delhi div for passengers.
145 Ambala div.
146 Ferozpur div.
147 Bikaner div.
148 Jodhpur div.
149
....
150 Lucknow NER div.
151 Varanasi NER div.
152 Sonepur & samastipur div.
153 Izatnagar div.
154 alipurduar jn div
155 Samastipur div.
156 Lumding div.
157 katihar div.
158 Rangiya div.
159 Tinsukia div.
....
160 Chennai div.
161 Chennai div. form chennai Egmore
162 Mysore div.
163 Thiruvananthapuram div.
165 Bengalore div.
166 Palkad div.
167 Madurai div.
168 Triuchchirappalli div.
....
170 Secunderabad div.
172 Vijayawada guntur div.
173 Hubli div.
174 Guntakal div.
176 Nanded & Hyderabad div.
......
180 kharagpur div.
181 Chakradharpur div.
182 Raipur & bilaspur div.
183 Sambalpur div.
184 Khurda road div.
185 waltiar ( visakhapatnam ) div.
186 Ranchi div.
188 Nagpur Div of SER
.....
190 Mumbai central div.
191 Ahmedabad div.
192 Bhavnagar Para div
193 Ratlam div.
194 Ahmedabad div.
195 Rajkot Div
196 Ajmer div.
197 Jaipur div.
198 Kota div
199 Ahmedabad div. (MG)