How can I query all IPs for a domain using dnspython

Question

I use dnspython to query a DNS server to resolve a domain name to its IP(s).

When I try to resolve "google.co.uk" I get only one IP. However, using another resolver tool I get another IP. Both IPs are correct and I tested them by placing the IPs in the browser, both open "google.co.uk".

Clearly there are more than IP asssigned for the domain name I am testing. Is there any way I can use in dnspython to retrieve all IPs for a given domain name?

Here is my simple script:

import dns.resolver

def resolve(domain):
  resolveList = []
      resolver = dns.resolver.Resolver(); #create a new instance named Resolver
      answer = resolver.query(domain,"A");
      y=0
      for rData in answer: 
          resolveList.append(rData)
          ++y        
  return resolveList

domainName = "google.co.uk"
queryResult = resolve(domainName);
for result in queryResult:
    print queryResult[0]

Answer 1

In the general case, no, there is no way to know when you have exhaustively enumerated all IP addresses in active use for a particular host name. Google is a good example; depending on your location in the world and their current load, they will return some, but not all, of their addresses, for load-balancing and similar purposes.