IP to ASN Mapping and GeoIP Services – Looking Glass / registries Reference


The country code, registry, and allocation date are all based on data obtained directly from the regional registries including: ARIN, RIPE, AFRINIC, APNIC, LACNIC. The information returned relating to these categories will only be as accurate as the data present in the RIR databases.

IMPORTANT NOTE: Country codes are likely to vary significantly from actual IP locations, and we must strongly advise that the IP to ASN mapping tool not be used as an IP geolocation (GeoIP) service.

The exact links for each of the datasets are as follows:

  • ftp.arin.net/pub/stats/arin/delegated-arin-extended-latest
  • ftp.ripe.net/ripe/stats/delegated-ripencc-latest
  • ftp.afrinic.net/pub/stats/afrinic/delegated-afrinic-latest
  • ftp.apnic.net/pub/stats/apnic/delegated-apnic-latest
  • ftp.lacnic.net/pub/stats/lacnic/delegated-lacnic-latest

The ASN descriptions are based on data obtained from cidr-report. (http://www.cidr-report.org/)

If you are looking for an IP geolocation service, please check out one of the following (note: links do not constitute an endorsement, please contact us if you have a major commercial or free IP geolocation service you would like listed here):

  • MaxMind  http://www.maxmind.com/app/ip-location
  • IP2Location http://www.ip2location.com/
  • Quova  http://www.quova.com/

To obtain more details about peering – Below is a list of most common looking glass :

  • BGP Origin ASN
  • BGP Peer ASN
  • BGP Prefix
  • Prefix Country Code (assigned)
  • Prefix Registry (assigned)
  • Prefix Allocation date
  • ASN Country Code (assigned)
  • ASN Registry (assigned)
  • ASN Allocation date
  • ASN Description

Cogent : http://www.cogentco.com/en/network/looking-glass

Level 3 : http://www.globalcrossing.com/network/network_looking_glass.aspx

GTT / Tinet : http://www.gtt.net/services/ip-transit/gtt-tinet-looking-glass/

HE : http://lg.he.net/

NTT : https://www.us.ntt.net/support/looking-glass

Global Crossing : http://lg.bt.net/

DE Telecom : https://s-lga1.s.de.net.dtag.de/index.php?pageid=lg

SAVVIS : http://as3561lg.savvis.net/lg.html

Sprint : https://www.sprint.net/lg

Vodafone : https://support.cw.com/?TESTDRIVE=1&LG=1

KPN : http://stats.eurorings.net/cgi-bin/lg.cgi

Earthlink : http://lg.eastlink.ca/

XO : http://xostats.xo.com/cgi-bin/xostats/diagtool-pub

TATA : http://lg.teleglobe.net/lg/

Tinet : http://www.ip.tiscali.net/lg/

Quest : http://stat.qwest.net/looking_glass.html

Centauri : http://lg.centauricom.com/lg/lg.cgi

EasyNet : http://lg.easynet.net/lg.php

TeliaSonera : http://lg.telia.net/

LINX : https://www.linx.net/pubtools/looking-glass.html

Most of those looking glass links support IPv4 as well as IPv6

Hope that helps!

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