Blog — Prepending the trouble

January 27 of the year 2021 was marked with quite a peculiar route leak. AS61666 - GLOBO started announcing prefixes of its upstream provider MHNET - AS28146 to its another provider ALGAR - AS16735. In three minutes GLOBO leaked 1330 prefixes, and the whole routing incident lasted for 8 minutes - a time that was enough to create 1435 conflicts in 21 countries with 265 ASNs, mainly in Brazil (194 ASNs), United States (22 ASNs) and Venezuela (7 ASNs).

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