Digital's Web Proxy Traces: Currently Available Traces V1.2 format

The trace files listed here represent the same trace as do the V1.0 format trace files, but with a few additional fields, as described in the documentation.

The current traces contain data taken between 29 August 1996 and 22 September 96. (Some traces may not cover entire days.) This is a total of approximately 24,477,674 references.

For a subset of the references including only those references from clients that were within a short distance of the proxy where the trace was made, see the subset traces.

Each day's data is in a separate file (the sizes given are for the compressed form of the file):

29 August 1996 (13648 KBytes); (headers)
30 August 1996 (26480 KBytes); (headers)
31 August 1996 (6888 KBytes); (headers)
1 September 1996 (7496 KBytes); (headers)
2 September 1996 (16272 KBytes); (headers)
3 September 1996 (32712 KBytes); (headers)
4 September 1996 (32416 KBytes); (headers)
5 September 1996 (31728 KBytes); (headers)
6 September 1996 (32112 KBytes); (headers)
7 September 1996 (11120 KBytes); (headers)
8 September 1996 (15856 KBytes); (headers)
9 September 1996 (34288 KBytes); (headers)
10 September 1996 (32856 KBytes); (headers)
11 September 1996 (31488 KBytes); (headers)
12 September 1996 (32504 KBytes); (headers)
13 September 1996 (33704 KBytes); (headers)
14 September 1996 (11472 KBytes); (headers)
15 September 1996 (11352 KBytes); (headers)
16 September 1996 (39480 KBytes); (headers)
17 September 1996 (35488 KBytes); (headers)
18 September 1996 (34040 KBytes); (headers)
19 September 1996 (32584 KBytes); (headers)
20 September 1996 (31216 KBytes); (headers)
21 September 1996 (8920 KBytes); (headers)
22 September 1996 (6296 KBytes); (headers)

The "headers" file for each trace contains statistics about the trace, including the number of references.

In addition, we provide files mapping between the unique IDs (UIDs) in these traces, and keyed-MD5 signatures of the orginal fields. These mappings may be useful, in the future, for correlating between traces from different sites.

Map between between keyed-MD5 fingerprint of client addresses and UIDs (384 KBytes, 17354 entries)
Map between between keyed-MD5 fingerprint of server names and UIDs (3048 KBytes, 140506 entries)
Map between between keyed-MD5 fingerprint of URL paths and UIDs (85232 KBytes, 3934419 entries)
Map between between keyed-MD5 fingerprint of URL queries and UIDs (18544 KBytes, 855986 entries)

Note: some of these mapping files are quite large! Also note that these are the same mapping files used for the V1.0 format trace files.

The complete set of traces is about 602 MBytes; the complete set of mapping files is about 107 MBytes.

We will not release the original mapping between these fields and keyed-MD5 signatures, nor will we release the MD5 key. Please do not ask.

For information about file formats, etc., please see the documentation.

Anyone using these traces agrees to these conditions:

These traces may not be used for any commercial purposes without the express prior, written consent of Digital Equipment Corporation. For information about licensing the use of these traces, please contact
You may make no attempt to deduce or otherwise discover the actual client addresses, server names, server paths, or query strings used in the underlying raw traces, nor may you attempt to deduce or otherwise discover any encryption key that we have used to conceal these fields.
We encourage the use of these traces for bona fide research, but we ask that all publications and public disclosures based on these traces give explicit credit to Digital Equipment Corporation for providing these traces.
These traces and the associated software may not be distributed to third parties.
Digital makes no promises that these traces are accurate, representative, or properly formatted. Use them entirely at your own risk. In particular, we cannot take responsibility for any incorrect conclusions that you may draw from these traces, even if the traces appear to justify these conclusions.
Concerning any software provided with these traces:
THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

For more information about the traces, please contact Jeffrey Mogul (mogul@pa.dec.com).