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| CNAME | substrate.office.com |
| CNAME | outlook.office365.com |
| CNAME | ooc-g2.tm-4.office.com |
| A | 2603:1036:207:457::2🇺🇸 Microsoft |
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| A | 2603:1036:302:880::2🇺🇸 Microsoft |
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| A | 40.104.46.34🇺🇸 Microsoft |
| A | 40.104.46.82🇺🇸 Microsoft |
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| A | 52.96.111.82🇺🇸 Microsoft |
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