You may perform this lookup using the API and get the results as easy-to-parse JSON data.
Read more on the API at https://iamroot.tech/about/api (regarding authentication and rate limits, among other things), or give it a go right away using the 'try it' button.
Checking 13.33.31.0 against SURBL (multi). Not listed (NotExistentDomain). 21ms
023
+000
Checking 13.33.31.0 against SORBS. Not listed (NotExistentDomain). 21ms
030
+000
Checking 13.33.31.0 against Barracuda Central. Not listed (NotExistentDomain). 27ms
036
+035
Checking 13.33.31.0 against Spamhaus ZEN. Not listed (NotExistentDomain). 35ms
044
+000
Checking 13.33.31.0 against PSBL (Passive Spam Block List). Not listed (NotExistentDomain). 41ms
050
+000
Checking 13.33.31.0 against spamcop. Not listed (NotExistentDomain). 48ms
085
+000
Checking 13.33.31.0 against UCEPROTECT lvl 2. Not listed (NotExistentDomain). 83ms
103
+000
Checking 13.33.31.0 against Junk Email Filter (tm). Not listed (NotExistentDomain). 100ms
105
+000
Checking 13.33.31.0 against ips.backscatterer.org. Not listed (NotExistentDomain). 103ms
232
+000
Checking 13.33.31.0 against GBUdb. Not listed (NotExistentDomain). 228ms
532
+000
Checking 13.33.31.0 against Spamrats!. Error: ServerFailure. 529ms
533
+496
Done
533
+000
11 DNSBL's checked in 531ms.
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