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 54.233.64.0 against Barracuda Central. Not listed (NotExistentDomain). 19ms
035
+000
Checking 54.233.64.0 against PSBL (Passive Spam Block List). Not listed (NotExistentDomain). 30ms
045
+000
Checking 54.233.64.0 against spamcop. Not listed (NotExistentDomain). 42ms
058
+000
Checking 54.233.64.0 against ips.backscatterer.org. Not listed (NotExistentDomain). 54ms
059
+057
Checking 54.233.64.0 against Spamhaus ZEN. Not listed (NotExistentDomain). 56ms
059
+000
Checking 54.233.64.0 against SORBS. Not listed (NotExistentDomain). 55ms
068
+000
Checking 54.233.64.0 against GBUdb. Not listed (NotExistentDomain). 63ms
106
+000
Checking 54.233.64.0 against Junk Email Filter (tm). Not listed (NotExistentDomain). 100ms
131
+000
Checking 54.233.64.0 against UCEPROTECT lvl 2. Not listed (NotExistentDomain). 127ms
150
+000
Checking 54.233.64.0 against SURBL (multi). Not listed (NotExistentDomain). 147ms
326
+000
Checking 54.233.64.0 against Spamrats!. Error: ServerFailure. 321ms
406
+347
Done
406
+000
11 DNSBL's checked in 404ms.
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