Ray, Thanks, it's a nice service to the community to try to clean this up.
I was about to reply that it looked like the default location, but you've been able to confirm that in the meantime. I noticed two papers recently that did this sort of cleaning. Pointing them out in case it's helpful: 1. https://hal.science/hal-04215113v2/file/geolocation-reproducibility-paper.pdf In Section 4.3, this paper identifies RIPE Atlas probes that (based on the claimed location) led to pings violating the speed of light, in order to prune the ones they use to be more trustworthy. They flagged 9 anchors and 96 normal probes. 2. This paper looked specifically at the question of RIPE Atlas geolocations: https://arxiv.org/abs/2409.19109 They shared results on violating probes here (the paper also has a link for the measurements), and it looks like it was updated as recently as last week https://github.com/kizhikevich/violating_ripe_probes I'll also forward your thread to some of the authors of both papers, in case they have more to add. Ethan On Mon, Jul 7, 2025 at 11:36 AM Ray Bellis <[email protected]> wrote: > On 2025/07/07 16: 27, Ray Bellis wrote: > I had meant to include a > screenshot. The location is approx 37. 75N, 97. 82W I received a reply > off-list indicating that this is the MaxMind default location for the US: > https: //urldefense. proofpoint. com/v2/url?u=https-3A__en. wikipedia. > org_wiki_MaxMind-23Kansas-5Fglitch&d=DwIGaQ&c=009klHSCxuh5AI1vNQzSO0KGjl4nbi2Q0M1QLJX9BeE&r=6ttVGscz_Aloa7TJZDIaFYXAH8LXd2R9zt0BYA0qof0&m=nqi5k-5PADBIDPHTSIkyCHBlY0DMGD_SPgVWh152Ok5g_kOroxOHawuGxogU3Uzs&s=Cf2WVpyBqtKYqiUHLkSDLBoDOONVkjaY64DoXoaHHos&e= > ZjQcmQRYFpfptBannerStart > This Message Is From an External Sender > This message came from outside your organization. > > ZjQcmQRYFpfptBannerEnd > > On 2025/07/07 16:27, Ray Bellis wrote: > > > I had meant to include a screenshot. The location is approx 37.75N, 97.82W > > I received a reply off-list indicating that this is the MaxMind default > location for the US: > https://urldefense.proofpoint.com/v2/url?u=https-3A__en.wikipedia.org_wiki_MaxMind-23Kansas-5Fglitch&d=DwIGaQ&c=009klHSCxuh5AI1vNQzSO0KGjl4nbi2Q0M1QLJX9BeE&r=6ttVGscz_Aloa7TJZDIaFYXAH8LXd2R9zt0BYA0qof0&m=nqi5k-5PADBIDPHTSIkyCHBlY0DMGD_SPgVWh152Ok5g_kOroxOHawuGxogU3Uzs&s=Cf2WVpyBqtKYqiUHLkSDLBoDOONVkjaY64DoXoaHHos&e= > > I've had a probe myself for so long that I didn't realise you could > install one without manually supplying a more accurate location. > > Ray > > ----- > To unsubscribe from this mailing list or change your subscription options, > please visit: > https://urldefense.proofpoint.com/v2/url?u=https-3A__mailman.ripe.net_mailman3_lists_ripe-2Datlas.ripe.net_&d=DwIGaQ&c=009klHSCxuh5AI1vNQzSO0KGjl4nbi2Q0M1QLJX9BeE&r=6ttVGscz_Aloa7TJZDIaFYXAH8LXd2R9zt0BYA0qof0&m=nqi5k-5PADBIDPHTSIkyCHBlY0DMGD_SPgVWh152Ok5g_kOroxOHawuGxogU3Uzs&s=j3gH525ojL-FKQXEGTpHQdlxd26rTG3FVYSW_n1gsts&e= > As we have migrated to Mailman 3, you will need to create an account with the > email matching your subscription before you can change your settings. > More details at: > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.ripe.net_membership_mail_mailman-2D3-2Dmigration_&d=DwIGaQ&c=009klHSCxuh5AI1vNQzSO0KGjl4nbi2Q0M1QLJX9BeE&r=6ttVGscz_Aloa7TJZDIaFYXAH8LXd2R9zt0BYA0qof0&m=nqi5k-5PADBIDPHTSIkyCHBlY0DMGD_SPgVWh152Ok5g_kOroxOHawuGxogU3Uzs&s=yTp5yZ_cWyYCpvBwMlxmoTLlV4YhtOQm_VdfiCitBuc&e= > > -- http://www.columbia.edu/~ebk2141/
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