Ubuntu’s US archive server (used by APT) always returns a /24 that is hosted in London (queried from multiple locations to make sure they weren’t using GeoIP functionality). Side note: Verisign’s Managed DNS can help with that if you are reading this Canonical)
;; ANSWER SECTION:
us.archive.ubuntu.com. 600 IN A 91.189.92.154
us.archive.ubuntu.com. 600 IN A 91.189.92.155
us.archive.ubuntu.com. 600 IN A 91.189.92.176
us.archive.ubuntu.com. 600 IN A 91.189.92.177
us.archive.ubuntu.com. 600 IN A 91.189.92.179
us.archive.ubuntu.com. 600 IN A 91.189.92.180
us.archive.ubuntu.com. 600 IN A 91.189.92.181
us.archive.ubuntu.com. 600 IN A 91.189.92.182
us.archive.ubuntu.com. 600 IN A 91.189.92.183
us.archive.ubuntu.com. 600 IN A 91.189.92.184
us.archive.ubuntu.com. 600 IN A 91.189.92.192
us.archive.ubuntu.com. 600 IN A 91.189.92.193
us.archive.ubuntu.com. 600 IN A 91.189.92.151
us.archive.ubuntu.com. 600 IN A 91.189.92.152
us.archive.ubuntu.com. 600 IN A 91.189.92.153
Example MTR/Traceroute from Amazon AWS US-West
Host Loss% Snt Last Avg Best Wrst StDev
1. ip-10-166-184-2.us-west-1.compute.internal 0.0% 4 0.4 0.6 0.3 1.4 0.5
2. ip-10-1-4-5.us-west-1.compute.internal 0.0% 4 0.5 5.7 0.4 21.3 10.4
3. 216.182.236.73 0.0% 4 0.7 0.7 0.6 0.7 0.1
4. 205.251.229.107 0.0% 4 1.4 1.3 1.2 1.4 0.1
5. 205.251.229.9 0.0% 4 2.3 8.7 2.3 20.1 8.3
6. xe-0-0-0-0.r05.plalca01.us.bb.gin.ntt.net 0.0% 4 2.8 2.9 2.8 3.0 0.1
7. ???
8. ae-4.r07.snjsca04.us.bb.gin.ntt.net 0.0% 4 166.1 169.9 166.1 171.3 2.5
9. ae-7.r20.snjsca04.us.bb.gin.ntt.net 0.0% 4 3.1 3.1 3.0 3.2 0.1
10. ae-4.r21.asbnva02.us.bb.gin.ntt.net 0.0% 4 75.7 75.7 75.6 75.8 0.1
11. ae-2.r23.amstnl02.nl.bb.gin.ntt.net 0.0% 4 156.8 159.9 156.8 163.7 3.5
12. ae-1.r03.amstnl02.nl.bb.gin.ntt.net 0.0% 3 160.8 163.2 160.7 168.0 4.2
13. te3-2-0-cr0.nik.nl.as6908.net 0.0% 3 162.9 163.7 161.2 167.1 3.1
14. te1-4-3508-cr0.thn.uk.as6908.net 0.0% 3 172.1 190.5 172.1 206.8 17.5
15. canonical-gw.datahop.net 0.0% 3 153.8 155.0 152.1 159.1 3.7
16. haetae.canonical.com 0.0% 3 158.3 154.5 146.1 159.1 7.3