15 lines
472 B
Markdown
15 lines
472 B
Markdown
---
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title: Blocking and depreferring BGP routes from specific countries
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---
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Hurricane Electric keeps a somewhat up-to-date list of ASNs registered to each country in the world. This is obtainable via:
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```sh
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export COUNTRY=CA # This is the country code to look up
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curl -A "asd" https://bgp.he.net/country/$COUNTRY | grep -o -E "AS([0-9]+)" | sort | uniq
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# You should get a list of ASNs piped to stdout
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```
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Two types of filters are handy. Blackholing, and depreferring.
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