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As some of you may have noticed, I have a script which repairs broken links / images, with some more options than the mass-replacement tool available to Stack Exchange staff. It can do all kinds of substitutions, checks if the new URL actually exists and if not, queries the Wayback Machine for a snapshot.

I fed it the following rules:

    {
        "urlPart": "front\\.math\\.ucdavis\\.edu/(0[0-6]\\d{2})\\.5(\\d{3})",
        "status": "KNOWN_BROKEN",
        "replacements": [
            "arxiv.org/abs/math/$3$4"
        ]
    },
    {
        "urlPart": "front\\.math\\.ucdavis\\.edu/(0[0-6]\\d{2})\\.47(\\d{2})",
        "status": "KNOWN_BROKEN",
        "replacements": [
            "arxiv.org/abs/math-ph/$30$4"
        ]
    },
    {
        "urlPart": "front\\.math\\.ucdavis\\.edu/(\\d{4}\\.\\d{4})",
        "status": "KNOWN_BROKEN",
        "replacements": [
            "arxiv.org/abs/$3"
        ]
    },
    {
        "urlPart": "front\\.math\\.ucdavis\\.edu/math(\\.LO)?/(\\d{7})",
        "status": "KNOWN_BROKEN",
        "replacements": [
            "arxiv.org/abs/math/$4"
        ]
    }

I just did a dry run and these are the replacements it would make. The first column is the number of posts the link appears in. I can't post the results here because the table is too large (an answer is limited to 30,000 characters).

The only link it cannot replace is http://front.math.ucdavis.edu/0309.3208 which appears in Number-theoretic congruences with geometry and topology?.