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 54.240.100.0 against Barracuda Central. Not listed (NotExistentDomain). 31ms
042
+041
Checking 54.240.100.0 against Spamhaus ZEN. Not listed (NotExistentDomain). 41ms
042
+000
Checking 54.240.100.0 against spamcop. Not listed (NotExistentDomain). 40ms
044
+000
Checking 54.240.100.0 against PSBL (Passive Spam Block List). Not listed (NotExistentDomain). 41ms
057
+000
Checking 54.240.100.0 against ips.backscatterer.org. Not listed (NotExistentDomain). 55ms
104
+000
Checking 54.240.100.0 against Junk Email Filter (tm). Not listed (NotExistentDomain). 100ms
104
+000
Checking 54.240.100.0 against UCEPROTECT lvl 2. Not listed (NotExistentDomain). 102ms
133
+000
Checking 54.240.100.0 against GBUdb. Not listed (NotExistentDomain). 129ms
190
+000
Checking 54.240.100.0 against SURBL (multi). Not listed (NotExistentDomain). 188ms
436
+000
Checking 54.240.100.0 against SORBS. Not listed (NotExistentDomain). 433ms
662
+000
Checking 54.240.100.0 against Spamrats!. Error: ServerFailure. 659ms
662
+620
Done
662
+000
11 DNSBL's checked in 661ms.
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