itgo.com

Checked 22 October 2026, 09:22 UTC · via 8.8.8.8
✗Problems found
20 passed 4 warnings 1 failed 6 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-03-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
2 March 1999
Last changed
26 February 2026
Expires
2 March 2027
Status
client transfer prohibited
Registry nameservers
ns1.freeservers.com, ns2.freeservers.com
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2027-03-02 #3
    The registration is valid until 2027-03-02 (130 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.freeservers.com, ns2.freeservers.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.freeservers.com, ns2.freeservers.com
NS in the zone
ns1.freeservers.com, ns2.freeservers.com
NameserverAddressesNetwork (AS)Glue
ns1.freeservers.com64.136.25.253AS13446 AS-NETZERO - Netzero,INC., US64.136.25.253
ns2.freeservers.com64.136.44.123AS13446 AS-NETZERO - Netzero,INC., US64.136.44.123

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.freeservers.com, ns2.freeservers.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13446 (AS-NETZERO - Netzero,INC., US): 2 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .com
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

fail

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.freeservers.com 64.136.25.253NOERROR, 142 ms, authoritativenono / norefused-
ns2.freeservers.com 64.136.44.123NOERROR, 105 ms, authoritativenono / norefused-

Checks

  • ✓ All respond #14
    All 2 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns1.freeservers.com (64.136.25.253): dial tcp 64.136.25.253:53: connect: connection refused; ns2.freeservers.com (64.136.44.123): dial tcp 64.136.44.123:53: connect: connection refused.
    #19
  • !
    No EDNS
    These nameservers don't support EDNS(0), needed for DNSSEC and answers larger than 512 bytes: ns1.freeservers.com (64.136.25.253), ns2.freeservers.com (64.136.44.123).
    #20
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

warn

serial 1790954662 · primary ns1.freeservers.com

Found

Primary (MNAME)
ns1.freeservers.com
Contact (RNAME)
dns.itgo.com
Serial
1790954662
Refresh / retry
300 s / 300 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.freeservers.com (64.136.25.253)1790954662
ns2.freeservers.com (64.136.44.123)1790954662

Checks

  • ✓ Serial 1790954662 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 5m is outside 20m–1d; retry 5m should be shorter than refresh 5m. Current values: refresh 5m, retry 5m, expire 14d, negative TTL 5m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.freeservers.com is one of the listed nameservers.
  • ✓ Contact dns@itgo.com #25
    The SOA RNAME dns.itgo.com means dns@itgo.com.
  • ✓ Timestamp serial #26
    The serial 1790954662 is a Unix timestamp (2026-10-02 15:24 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

8 records at the apex

Found

Read from
64.136.25.253:53
TypeValueTTL
SOAns1.freeservers.com. dns.itgo.com. 1790954662 300 300 1209600 300300
NSns1.freeservers.com.300
NSns2.freeservers.com.300
A64.136.20.36300
A64.136.20.43300
MX10 mx-ws.dca.untd.com.300
MX10 mx-ws.vgs.untd.com.300
TXT"v=spf1 include:spf.bluetie.com ~all"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 2d and in the zone 5m; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35