DNS Blacklist Checker
Check whether an IP address or hostname is listed on DNS blacklists.
Install
pip install lupaxa-dns-blacklist-checker
dns-blacklist-checker --help
CLI
dns-blacklist-checker 192.0.2.1 example.com
dns-blacklist-checker 203.0.113.1 --zone zen.spamhaus.org --timeout 5
python -m lupaxa.dns_blacklist_checker --version
dnsbl is an alias for dns-blacklist-checker. Both commands accept the same
flags and print the same output. python -m lupaxa.dns_blacklist_checker runs
that same program.
The tool resolves each hostname to every IPv4 and IPv6 address, reverses the address, and queries the built-in DNSBL zones. A loopback answer means the address is listed. Spamhaus and Abusix policy codes are reported as notes.
Library
from lupaxa.dns_blacklist_checker import check
result = check("203.0.113.9", zones=("zen.spamhaus.org",))
print(result.listed, [item.address for item in result.addresses])
Development
make init
make python-install-dev
make python-check
make mkdocs-serve
Documentation
The published guide is at https://dns-blacklist-checker.thelupaxaproject.org/.
Site Markdown lives in mkdocs/.
1 maintainer
Release files for lupaxa-dns-blacklist-checker 0.1.2
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| lupaxa_dns_blacklist_checker-0.1.2.tar.gz | 10.3 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| lupaxa_dns_blacklist_checker-0.1.2-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 22.4 kB
Release files / lupaxa_dns_blacklist_checker-0.1.2.tar.gz
| Download URL | lupaxa_dns_blacklist_checker-0.1.2.tar.gz |
|---|---|
| Size | 10.3 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
9611655d4a6ef4e3584376f830e364f26dcea6e336204c57177040a5a1478abd
|
|
BLAKE2b-256 checksum How to use checksums |
d639b108b0b6a748aab8878f87f1cbe3cc865fbf1c59892e34968ab018aa95ed
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 25, 2026.
Transparency logRelease files / lupaxa_dns_blacklist_checker-0.1.2-py3-none-any.whl
| Download URL | lupaxa_dns_blacklist_checker-0.1.2-py3-none-any.whl |
|---|---|
| Size | 12.1 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
67b527887cae1e1b5c181922a09f8b7df0bbb818a525f8221bfed577c57dc74b
|
|
BLAKE2b-256 checksum How to use checksums |
945d5e18a0fc4873f202050f673cd3b5e8f26264b7b9ba27069188c864381b5a
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 25, 2026.
Transparency log
