README.md

BGP-ASN-DNS

This repository includes and summraise some resources in networking

DNS & IPs

Important Resources

• Root Servers Map
  • https://root-servers.org/
• Root Servers List
  • https://www.iana.org/domains/root/servers
• List of All TLD Domains
  • https://www.iana.org/domains/root/db
  • https://data.iana.org/TLD/tlds-alpha-by-domain.txt
• IPv4 Multicast Address Space Registry
  • https://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml
• IPv4 Special-Purpose Address Registry
  • https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml
• Autonomous System (AS) Numbers & Registrar
  • https://www.iana.org/assignments/as-numbers/as-numbers.xhtml
• Special-Purpose Autonomous System (AS) Numbers
  • https://www.iana.org/assignments/iana-as-numbers-special-registry/iana-as-numbers-special-registry.xhtml
• A root server matrics
  • https://a.root-servers.org/metrics

Dig Command

• dig +trace google.com

• dig +norecurse google.com

• dig google.com @a.root-servers.net

• dig +all +answer +multiline google.com any

• dig google.com any

• dig @ns.example.com -tAXFR example.com

• dig -t <NS,AA,AAAA,TXT> @8.8.8.8 google.com

• DNS Flags:

  • rd: Recursion Desired
  • ra: Recursion Available
  • aa: Authoritative Answer
  • qr: specifies whether it is a query (0), or a response (1)
  • https://www.zytrax.com/books/dns/ch15/#answer

ASN

Important Resources

• ASN Info, Graph and Connected ASNs
  • https://bgp.he.net/AS8697#_asinfo
  • https://bgpview.io/asn/8376#info
• ASN IPs
  • https://bgp.he.net/AS8697#_prefixes
  • https://bgpview.io/asn/8376#prefixes-v4

BGP & BGPlay

RIPE API

Full documentation cen be found in https://stat.ripe.net/docs/02.data-api/ (Very Interesting!)

• Get Country ASN List

  https://stat.ripe.net/data/country-asns/data.json?resource=jo&lod=1

• Get IP/Domain Info for DNS/IP

  curl --location --request GET "https://stat.ripe.net/data/dns-chain/data.json?resource=94.249.58.131"

FB Goes Down!

You can observe how FB went down on October 4, 2021 at 15:00 by extracting their NS server, extracting the ASN, and inserting it into the RIPE BGPlay.

• https://stat.ripe.net/widget/bgplay

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