Escaped characters that cause an external request in-between forward slashes

<div style="background:url('/\0x09/fuzz.shazzer.co.uk/41kg9upc2o4?9')">

<div style="background:url('/\
/fuzz.shazzer.co.uk/y54yy940b0d?10')">

<div style="background:url('/\0x0C/fuzz.shazzer.co.uk/29k20gnl26l?12')">

<div style="background:url('/\
/fuzz.shazzer.co.uk/hc74xf315ab?13')">

<div style="background:url('/\//fuzz.shazzer.co.uk/hq1so7ch0di?47')">

<div style="background:url('/\9/fuzz.shazzer.co.uk/sfw27mti2gq?57')">

<div style="background:url('/\A/fuzz.shazzer.co.uk/lk0250e7f6h?65')">

<div style="background:url('/\D/fuzz.shazzer.co.uk/vcajd95tykd?68')">

<div style="background:url('/\\/fuzz.shazzer.co.uk/oxhwhn85uel?92')">

<div style="background:url('/\a/fuzz.shazzer.co.uk/3sm7zlus9kp?97')">

<div style="background:url('/\d/fuzz.shazzer.co.uk/svdt6deptx?100')">

<div style="background:url('/\0x09/fuzz.shazzer.co.uk/brlx3r85ja?9')">

<div style="background:url('/\
/fuzz.shazzer.co.uk/kapybrto0nh?10')">

<div style="background:url('/\0x0C/fuzz.shazzer.co.uk/gnc37hmhils?12')">

<div style="background:url('/\
/fuzz.shazzer.co.uk/3f8vjv3lqju?13')">

<div style="background:url('/\//fuzz.shazzer.co.uk/5tp2kp4j7um?47')">

<div style="background:url('/\9/fuzz.shazzer.co.uk/6ufqfb760lt?57')">

<div style="background:url('/\A/fuzz.shazzer.co.uk/xamxh1396e?65')">

<div style="background:url('/\D/fuzz.shazzer.co.uk/3av6b3q56ak?68')">

<div style="background:url('/\a/fuzz.shazzer.co.uk/tj3zt8zydiq?97')">