http://www.library.utoronto.ca/ has been crawled 599 times going all the way back to December 25, 1996.

A crawl can be a duplicate of the last one. It happens about 25% of the time across 420,000,000 websites. FAQ
Jan
1
2
3
4

January 5, 2011

1 snapshot

5
6
7

January 8, 2011

1 snapshot

8
9

January 10, 2011

1 snapshot

10
11
12
13
14
15
16

January 17, 2011

1 snapshot

17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Feb
1
2
3

February 4, 2011

2 snapshots

4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Mar
1
2
3
4

March 5, 2011

1 snapshot

5
6
7
8

March 9, 2011

1 snapshot

9

March 10, 2011

1 snapshot

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

March 29, 2011

1 snapshot

29
30
31
Apr
1
2
3
4

April 5, 2011

1 snapshot

5
6
7
8
9
10
11

April 12, 2011

1 snapshot

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
May
1
2
3
4
5
6

May 7, 2011

1 snapshot

7
8
9
10
11
12
13

May 14, 2011

1 snapshot

14
15
16
17
18
19
20
21
22

May 23, 2011

1 snapshot

23
24
25
26
27
28
29
30
31
Jun
1
2
3
4
5
6
7
8

June 9, 2011

1 snapshot

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Jul
1
2
3
4
5

July 6, 2011

1 snapshot

6
7
8

July 9, 2011

1 snapshot

9
10
11
12
13

July 14, 2011

1 snapshot

14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Aug
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Sep
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Oct
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Nov
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Dec
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

Note

This calendar view maps the number of times http://www.library.utoronto.ca/ was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.