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

<div style="background:url('/\0x09/fuzz.shazzer.co.uk/v8su7ydpak?9')">

<div style="background:url('/\
/fuzz.shazzer.co.uk/nvgv6u2b54j?10')">

<div style="background:url('/\0x0C/fuzz.shazzer.co.uk/z9qrqawq2u?12')">

<div style="background:url('/\
/fuzz.shazzer.co.uk/vei87awdeg?13')">

<div style="background:url('/\//fuzz.shazzer.co.uk/pfyzeyl3hbo?47')">

<div style="background:url('/\9/fuzz.shazzer.co.uk/hfxk31uggh7?57')">

<div style="background:url('/\A/fuzz.shazzer.co.uk/6ekwtqbgfn2?65')">

<div style="background:url('/\D/fuzz.shazzer.co.uk/a4z1b7zwc65?68')">

<div style="background:url('/\a/fuzz.shazzer.co.uk/g6to5cd0t3s?97')">

<div style="background:url('/\d/fuzz.shazzer.co.uk/xrf4kmhror?100')">

<div style="background:url('/\0x09/fuzz.shazzer.co.uk/9ncyauyia0b?9')">

<div style="background:url('/\
/fuzz.shazzer.co.uk/r2ol7ng9gi?10')">

<div style="background:url('/\0x0C/fuzz.shazzer.co.uk/8exnrb22v8t?12')">

<div style="background:url('/\
/fuzz.shazzer.co.uk/1le931tivx7?13')">

<div style="background:url('/\//fuzz.shazzer.co.uk/830kzssspmu?47')">

<div style="background:url('/\9/fuzz.shazzer.co.uk/ltj7rooyta?57')">

<div style="background:url('/\A/fuzz.shazzer.co.uk/0t4banvqs0ne?65')">

<div style="background:url('/\D/fuzz.shazzer.co.uk/5vlxuwsrpp5?68')">

<div style="background:url('/\\/fuzz.shazzer.co.uk/b5apgr66jwo?92')">

<div style="background:url('/\a/fuzz.shazzer.co.uk/s2trha5x8f?97')">