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Google served from non-google IPs?



So today, I saw this:

BlackBox:~ jlixfeld$ host google.ca 8.8.8.8
Using domain server:
Name: 8.8.8.8
Address: 8.8.8.8#53
Aliases:

google.ca has address 206.126.112.166
google.ca has address 206.126.112.177
google.ca has address 206.126.112.172
google.ca has address 206.126.112.187
google.ca has address 206.126.112.151
google.ca has address 206.126.112.158
google.ca has address 206.126.112.157
google.ca has address 206.126.112.173
google.ca has address 206.126.112.181
google.ca has address 206.126.112.155
google.ca has address 206.126.112.147
google.ca has address 206.126.112.185
google.ca has address 206.126.112.143
google.ca has address 206.126.112.170
google.ca has address 206.126.112.162
google.ca has IPv6 address 2607:f8b0:4006:808::100f
google.ca mail is handled by 50 alt4.aspmx.l.google.com.
google.ca mail is handled by 30 alt2.aspmx.l.google.com.
google.ca mail is handled by 20 alt1.aspmx.l.google.com.
google.ca mail is handled by 10 aspmx.l.google.com.
google.ca mail is handled by 40 alt3.aspmx.l.google.com.
BlackBox:~ jlixfeld$

That is not Google IPv4 address space, and those IPv4 IPs are not being announced by 15169.

Am I dumb in thinking that this is weird or is this sort of thing commonplace?