1.1.1.1 & 1.1.1.2 unreachable from Pepephone (Spain)

Hi,
I have discovered that a Spanish mobile ISP is misusing both 1.1.1.1 and 1.1.1.2 IP addresses.

This is a mobile virtual network operator (MVNO) so they use the infrastructure of several operators like Masmovil / Yoigo.

Depending on the IP assigned to the customer (remember, this is a 3G/4G connection), the IP unavailable is either 1.1.1.1 or 1.1.1.2.

When the IP assigned starts with 3 (three), then 1.1.1.1 is unreachable but 1.1.1.2 works.
When the IP assigned starts with 4 (four), then 1.1.1.1 works but 1.1.1.2 is unreachable.

Traceroutes:

I have already contacted them but they fail to acknowledge the issue, maybe some from Cloudflare can reach them.

Contact Information:

@pepephone on Twitter

37.29.128.0 - 37.29.191.255
Xfera Moviles SA / Yoigo

46.6.128.0 - 46.6.255.255
Xfera Moviles SA / Yoigo