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Username: Ron_Bennett
Date/Time: Sun, October 7, 2001 at 8:01 AM GMT
Browser: Microsoft Internet Explorer V5.5 using Windows 98
Subject: .INFO DNS Reliability Questioned...no A records for name servers - WHY?

Message:
 

 
I've been doing some digging around and it appears that 2nd level .INFO domain names still only have NS records...no A records for their associated name servers (note the lack of the Additional Records Section). I'm not sure if that's a problem, but I would suspect it makes .INFO lookups slower and less reliable overall than .COM lookups.

Example lookups:

2nd level .INFO domain:

Sunday, October 07, 2001 03:56:17AM

Name Server LookUp for sun.info
Search Type: ALL - All records
Name Server: tld1.nominum.com

Header:
   ID=2671, QR=Response, Opcode=QUERY, RCODE=NO ERROR
   Authoritative Answer=No, Truncation=No
   Recursion Desired=Yes, Recursion Available=No
   QDCOUNT=1, ANCOUNT=0, NSCOUNT=2, ARCOUNT=0
Question:
   Name=sun.info, QTYPE=ALL, QCLASS=1
Authority Records Section:
- Name=sun.info
    Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=16
    Name Server=ns-brm.sun.com
- Name=sun.info
    Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=5
    Name Server=ns.sun.com
---

2nd level .COM domain:

Sunday, October 07, 2001 03:57:15AM

Name Server LookUp for sun.com
Search Type: ALL - All records
Name Server: A.GTLD-SERVERS.NET

Header:
   ID=2520, QR=Response, Opcode=QUERY, RCODE=NO ERROR
   Authoritative Answer=No, Truncation=No
   Recursion Desired=Yes, Recursion Available=No
   QDCOUNT=1, ANCOUNT=3, NSCOUNT=3, ARCOUNT=3
Question:
   Name=sun.com, QTYPE=ALL, QCLASS=1
Answer Section:
- Name=sun.com
    Type=NS, Class=1, TTL=172800 (2 Days), RDLENGTH=5
    Name Server=NS.sun.com
- Name=sun.com
    Type=NS, Class=1, TTL=172800 (2 Days), RDLENGTH=10
    Name Server=NS.USEC.sun.com
- Name=sun.com
    Type=NS, Class=1, TTL=172800 (2 Days), RDLENGTH=9
    Name Server=NS-BRM.sun.com
Authority Records Section:
- Name=sun.com
    Type=NS, Class=1, TTL=172800 (2 Days), RDLENGTH=2
    Name Server=NS.sun.com
- Name=sun.com
    Type=NS, Class=1, TTL=172800 (2 Days), RDLENGTH=2
    Name Server=NS.USEC.sun.com
- Name=sun.com
    Type=NS, Class=1, TTL=172800 (2 Days), RDLENGTH=2
    Name Server=NS-BRM.sun.com
Additional Records Section:
- Name=NS.sun.com
    Type=A, Class=1, TTL=172800 (2 Days), RDLENGTH=4
    IP Address=192.9.9.3
- Name=NS.USEC.sun.com
    Type=A, Class=1, TTL=172800 (2 Days), RDLENGTH=4
    IP Address=192.9.48.3
- Name=NS-BRM.sun.com
    Type=A, Class=1, TTL=172800 (2 Days), RDLENGTH=4
    IP Address=192.18.99.5
---

Now which looks more reliable to you?? It's interesting to note that Afilias themselves use A records for their domains, but not for those of their customers. So much for reliability...or is there more to this that I'm missing??

Welcome feedback on this issue...

 


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