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Ask HN: How does Starlink work for IP address/ASN internationally?

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Ask HN: How does Starlink work for IP address/ASN internationally?

#1

Post by rootsudo »

I was curious how Starlink would work when connected in international locations? Would it show a US IP address? Would it show a Starlink ISP ASN?

For comparision - cell phone tethering plans, you can be "anywhere" in the world, but the roaming telcom provider will (lack of a better word) "tunnel" your connection to your local telcom so you could be in China, France, UK but you would have the country of origin IP address/telcom provider ASN? E.g. T-Mobile from USA, but in Europe would show that you're either in California or Kansas.

Re: Ask HN: How does Starlink work for IP address/ASN internationally?

#4

Post by tiernano »

So, bit of digging, StarLink's ASN is 14593 [1]. They show as having 302 V4 blocks and 59 V6 blocks of space [2]. Some of that space (well, most) looks to be GeoLocated in the US, but some show as other countries. Same with the V6 blocks [3]. My guess is that each V4 block is assigned to a given country or Geo Location, and same with a larger V6. Given they use CGNAT, they wont need as much V4 blocks to split out. If you bring your device with you, it will show a new IP Address... Also, as of note, I have seen, at some stage, that it either shows Google's IP range, or that Google was announcing their blocks in Ireland at one stage... I dont have it myself, but did some digging when a someone i know got it...

[1]: https://bgp.he.net/AS14593 [2]: https://bgp.he.net/AS14593#_prefixes [3]: https://bgp.he.net/AS14593#_prefixes6

Re: Ask HN: How does Starlink work for IP address/ASN internationally?

#5

Post by londons_explore »

Starlink says on their FAQ page[1] for the roaming model that if you roam too far, your connection will be briefly interrupted while they assign you a new IP address.

I think that's because they want every user to have a reasonable experience with all the websites out there that do geoIP lookups. It also gives them flexibility in the future to not act as a worldwide internet backbone for their own users traffic by advertising each set of local IP's only at local POP's.

[1]: https://starlink-enterprise-guide.readme.io/docs/dhcp-config....

Re: Ask HN: How does Starlink work for IP address/ASN internationally?

#6

Post by tinus_hn »

tiernano wrote: post #4

So, bit of digging, StarLink's ASN is 14593 [1]. They show as having 302 V4 blocks and 59 V6 blocks of space [2]. Some of that space (well, most) looks to be GeoLocated in the US, but some show as other countries. Same with the V6 blocks [3]. My guess is that each V4 block is assigned to a given country or Geo Location, and same with a larger V6. Given they use CGNAT, they wont need as much V4 blocks to split out. If…

Geolocation is a fiction, it’s just lists that claim addresses are in some country. Nobody is under any obligation to make sure those claims are true.

Re: Ask HN: How does Starlink work for IP address/ASN internationally?

#7

Post by tiernano »

tinus_hn wrote: post #6
tiernano wrote: post #4

So, bit of digging, StarLink's ASN is 14593 [1]. They show as having 302 V4 blocks and 59 V6 blocks of space [2]. Some of that space (well, most) looks to be GeoLocated in the US, but some show as other countries. Same with the V6 blocks [3]. My guess is that each V4 block is assigned to a given country or Geo Location, and same with a larger V6. Given they use CGNAT, they wont need as much V4 blocks to split out. If…

Geolocation is a fiction, it’s just lists that claim addresses are in some country. Nobody is under any obligation to make sure those claims are true.

Also true, but as someone who ran my own asn and space for 5 years, it can be a pain when it doesn’t work. Spent a good chunk of time making sure my space showed as Ireland, not us or Germany. Netflix, Disney+ and others all didn’t like me to start… but there are ways of fixing it.

Re: Ask HN: How does Starlink work for IP address/ASN internationally?

#8

Post by londons_explore »

tiernano wrote: post #4

So, bit of digging, StarLink's ASN is 14593 [1]. They show as having 302 V4 blocks and 59 V6 blocks of space [2]. Some of that space (well, most) looks to be GeoLocated in the US, but some show as other countries. Same with the V6 blocks [3]. My guess is that each V4 block is assigned to a given country or Geo Location, and same with a larger V6. Given they use CGNAT, they wont need as much V4 blocks to split out. If…

Many of Musks companies have access to internal google API's that aren't available to the public.

For example, the in-tesla car map uses various google data sources in ways the regular API doesn't support.

Re: Ask HN: How does Starlink work for IP address/ASN internationally?

#10

Post by [deleted] »

tinus_hn wrote: post #6
tiernano wrote: post #4

So, bit of digging, StarLink's ASN is 14593 [1]. They show as having 302 V4 blocks and 59 V6 blocks of space [2]. Some of that space (well, most) looks to be GeoLocated in the US, but some show as other countries. Same with the V6 blocks [3]. My guess is that each V4 block is assigned to a given country or Geo Location, and same with a larger V6. Given they use CGNAT, they wont need as much V4 blocks to split out. If…

Geolocation is a fiction, it’s just lists that claim addresses are in some country. Nobody is under any obligation to make sure those claims are true.

[deleted]
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