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Filter out expired and parked domains in domain resolver

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This commit is contained in:
ValdikSS 2022-07-30 15:25:16 +03:00
parent 267d3b5862
commit 1463e8bfa6
1 changed files with 10 additions and 1 deletions
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11
scripts/resolve-dns-nxdomain.py
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@ -4,6 +4,7 @@ import sys
import os
import asyncio
import dns.resolver
import dns.rdatatype
import dns.asyncresolver
import dns.exception
import dns._asyncio_backend
@ -19,6 +20,10 @@ FINAL_PASS_TIMEOUT = 10
FINAL_PASS_CONCURRENCY = 35
NS_FILTER_SUBSTRINGS = ("parking", "expired", ".afternic.com", "parklogic", ".parktons.com",
".above.com", ".ztomy.com", ".notneiron.com", ".ibspark.com", ".bodis.com",
".example.com")
class AZResolver(dns.asyncresolver.Resolver):
def __init__(self, *args, **kwargs):
self.limitConcurrency(25) # default limit
@ -31,7 +36,11 @@ class AZResolver(dns.asyncresolver.Resolver):
async with self.limitingsemaphore:
try:
#print(domain, file=sys.stderr)
await self.resolve(domain)
domain_nses = await self.resolve(domain, dns.rdatatype.NS)
for ns in domain_nses:
# Filter out expired and parked domains
if any(filtered_substr in str(ns) for filtered_substr in NS_FILTER_SUBSTRINGS):
return domain
except (dns.exception.Timeout, dns.resolver.NXDOMAIN,
dns.resolver.YXDOMAIN, dns.resolver.NoNameservers):