lockheedmartin.com

Checked 22 October 2026, 09:40 UTC · via 8.8.8.8
!Passed with warnings
22 passed 5 warnings 0 failed 4 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2032-10-11

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
12 October 1996
Last changed
20 October 2022
Expires
11 October 2032
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns1.lmco.com, ns2.lmco.com, ns3.lmco.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 2032-10-11 #3
    The registration is valid until 2032-10-11 (2180 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.lmco.com, ns2.lmco.com, ns3.lmco.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.lmco.com, ns2.lmco.com, ns3.lmco.com
NS in the zone
ns1.lmco.com, ns3.lmco.com
NameserverAddressesNetwork (AS)Glue
ns1.lmco.com192.30.247.5AS6075 LM-CORP - Lockheed Martin Corporation, US192.30.247.5
ns2.lmco.com (parent only)192.28.125.133AS6075 LM-CORP - Lockheed Martin Corporation, US192.28.125.133
ns3.lmco.com192.35.35.5AS6075 LM-CORP - Lockheed Martin Corporation, US192.35.35.5

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.lmco.com, ns2.lmco.com, ns3.lmco.com.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns2.lmco.com. ns1.lmco.com, ns2.lmco.com, ns3.lmco.com report NS ns1.lmco.com ns3.lmco.com.
    #7
  • ✓ 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 3 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS6075 (LM-CORP - Lockheed Martin Corporation, US): 3 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

pass

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.lmco.com 192.30.247.5NOERROR, 130 ms, authoritativenoyes / yesrefused-
ns2.lmco.com 192.28.125.133NOERROR, 21 ms, authoritativenoyes / yesrefused-
ns3.lmco.com 192.35.35.5NOERROR, 92 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 3 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.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

warn

serial 2011052104 · primary ns1.lmco.com

Found

Primary (MNAME)
ns1.lmco.com
Contact (RNAME)
lm-nic.lmco.com
Serial
2011052104
Refresh / retry
14400 s / 900 s
Expire
2419200 s
Negative TTL
120 s

Serial per nameserver

NameserverSerial
ns1.lmco.com (192.30.247.5)2011052104
ns2.lmco.com (192.28.125.133)2011052104
ns3.lmco.com (192.35.35.5)2011052104

Checks

  • ✓ Serial 2011052104 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 2m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 4h, retry 15m, expire 28d, negative TTL 2m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.lmco.com is one of the listed nameservers.
  • ✓ Contact lm-nic@lmco.com #25
    The SOA RNAME lm-nic.lmco.com means lm-nic@lmco.com.
  • ✓ Date-based serial #26
    The serial 2011052104 follows the YYYYMMDDnn convention (2011-05-21).

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

warn

10 records at the apex

Found

Read from
192.30.247.5:53
TypeValueTTL
SOAns1.lmco.com. lm-nic.lmco.com. 2011052104 14400 900 2419200 120900
NSns1.lmco.com.900
NSns3.lmco.com.900
A13.32.115.9937
A13.32.115.2937
A13.32.115.9737
A13.32.115.12937
TXT"v=spf1 -all"900
TXT"_293ecaw006ou56secfbr3fy2atts0t3"900
TXT"w63f1b7rw1y4ff2dx3kdk8yh0gwrs0jv"900

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (37s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 15m; resolvers may use either.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • 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