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Re: IP->Country Data (RE: ISP's Contact List)

  • From: Hank Nussbacher
  • Date: Mon Jun 13 14:47:56 2005

On Mon, 13 Jun 2005, william(at) wrote:

I suspect your completewhois does not take into account ERX data:
Huge swaths of IP space were moved around between RIRs from Jan 2003-Apr

If you want specific examples, contact me off-list.


> FYI - It maybe of interest here to know that completewhois provides this
> data. For determining ip->country placement only RIR data on direct ip
> allocations and assignments is used, so if ip block is listed as having
> been allocated to company with corporate address in Jamaica but is used in
> US, the block will show up as JM. That also avoids issue of having others
> blame me for bad data as algorithm for how its generated is easily confirmed
> with RIR whois and in 98% this does provide sufficiently good data. Our
> lists are regenerated EVERY DAY and available at:
> Even though I've never promoted this, it actually is getting rather used
> and I've had at least dozen requests this year along to make data
> available though means other then raw text file. So you might as well be
> first to know that 3 days ago this was finished and data is now available
> for verification by dns. You can now do lookup in RBL style to
>   <reverse-ip>
> (i.e. for my dns server ip, it would be lookup at
> For TXT lookups it will tell you country code and country name, i.e.
> "US - United States". For RBL "A" lookups it will answer with 127.0.a.b
> where a and b are ascii representation of 1st and 2nd letter of country
> code, so for example for US this would be
> Complete list of these codes and instructions are at:
> So feel free to use if you like for whatever reasons (and don't complain
> to me if you see wrong data, lookup RIR whois and send corrections there).
> One last point is as I noted data is based on RIR direct allocations, so
> swips and suballocations are not used. In the future planned is separate
> service and data for experimental use that will be based on SWIP data
> (lowest allocation), however my checks on it show that in too many places
> its even less accurate then RIR direct info.
> --
> William Leibzon
> Elan Networks
> [email protected]
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