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 13.33.174.0 against SORBS. Not listed (NotExistentDomain). 18ms
021
+000
Checking 13.33.174.0 against SURBL (multi). Not listed (NotExistentDomain). 19ms
031
+000
Checking 13.33.174.0 against Barracuda Central. Not listed (NotExistentDomain). 29ms
039
+000
Checking 13.33.174.0 against PSBL (Passive Spam Block List). Not listed (NotExistentDomain). 35ms
043
+000
Checking 13.33.174.0 against spamcop. Not listed (NotExistentDomain). 42ms
051
+050
Checking 13.33.174.0 against Spamhaus ZEN. Not listed (NotExistentDomain). 50ms
066
+000
Checking 13.33.174.0 against GBUdb. Not listed (NotExistentDomain). 62ms
102
+000
Checking 13.33.174.0 against Junk Email Filter (tm). Not listed (NotExistentDomain). 99ms
149
+000
Checking 13.33.174.0 against UCEPROTECT lvl 2. Not listed (NotExistentDomain). 147ms
152
+000
Checking 13.33.174.0 against ips.backscatterer.org. Not listed (NotExistentDomain). 150ms
415
+000
Checking 13.33.174.0 against Spamrats!. Error: ServerFailure. 411ms
415
+364
Done
415
+000
11 DNSBL's checked in 414ms.
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