tbs.com

Checked 22 October 2026, 10:55 UTC · via 8.8.8.8
!Passed with warnings
24 passed 3 warnings 0 failed 4 info

Registration

info

.com generic · Nom-iq Ltd. dba COM LAUDE · expires 2027-03-12

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Nom-iq Ltd. dba COM LAUDE
Registered
12 March 1999
Last changed
4 December 2023
Expires
12 March 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
a1-17.akam.net, a12-64.akam.net, a16-65.akam.net, a3-66.akam.net, a6-67.akam.net, a9-64.akam.net
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 2027-03-12 #3
    The registration is valid until 2027-03-12 (140 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update 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

info

a1-17.akam.net, a12-64.akam.net, a16-65.akam.net, a3-66.akam.net, a6-67.akam.net, a9-64.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-17.akam.net, a12-64.akam.net, a16-65.akam.net, a3-66.akam.net, a6-67.akam.net, a9-64.akam.net
NS in the zone
a1-17.akam.net, a12-64.akam.net, a16-65.akam.net, a3-66.akam.net, a6-67.akam.net, a9-64.akam.net
NameserverAddressesNetwork (AS)Glue
a1-17.akam.net193.108.91.17 2600:1401:2::11AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a12-64.akam.net184.26.160.64 2600:1480:f000::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a16-65.akam.net23.211.132.65 2600:1406:1b::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a3-66.akam.net96.7.49.66 2600:1408:1c::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a6-67.akam.net23.211.133.67 2600:1401:1::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-64.akam.net184.85.248.64 2a02:26f0:117::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-17.akam.net, a12-64.akam.net, a16-65.akam.net, a3-66.akam.net, a6-67.akam.net, a9-64.akam.net.
  • ✓ 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 6 IPv4 /24s and 6 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 12 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 .net
    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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-17.akam.net 193.108.91.17NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
a1-17.akam.net 2600:1401:2::11NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
a12-64.akam.net 184.26.160.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.30
a12-64.akam.net 2600:1480:f000::40NOERROR, 3 ms, authoritativenoyes / yesrefused48878.26
a16-65.akam.net 23.211.132.65NOERROR, 7 ms, authoritativenoyes / yesrefused48878.27
a16-65.akam.net 2600:1406:1b::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a3-66.akam.net 96.7.49.66NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
a3-66.akam.net 2600:1408:1c::42NOERROR, 6 ms, authoritativenoyes / yesrefused41824.5
a6-67.akam.net 23.211.133.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27
a6-67.akam.net 2600:1401:1::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
a9-64.akam.net 184.85.248.64NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
a9-64.akam.net 2a02:26f0:117::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8

Checks

  • ✓ All respond #14
    All 12 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-17.akam.net: "41824.5"; a12-64.akam.net: "48878.30"; a12-64.akam.net: "48878.26"; a16-65.akam.net: "48878.27"; a16-65.akam.net: "48878.33"; a3-66.akam.net: "41824.9"; a3-66.akam.net: "41824.5"; a6-67.akam.net: "48878.27"; a9-64.akam.net: "41824.7"; a9-64.akam.net: "41824.8". Hide or replace the version string.
    #17
  • ✓ 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

pass

serial 2018041120 · primary a3-66.akam.net

Found

Primary (MNAME)
a3-66.akam.net
Contact (RNAME)
hostmaster.akamai.com
Serial
2018041120
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
a1-17.akam.net (193.108.91.17)2018041120
a1-17.akam.net (2600:1401:2::11)2018041120
a12-64.akam.net (184.26.160.64)2018041120
a12-64.akam.net (2600:1480:f000::40)2018041120
a16-65.akam.net (23.211.132.65)2018041120
a16-65.akam.net (2600:1406:1b::41)2018041120
a3-66.akam.net (96.7.49.66)2018041120
a3-66.akam.net (2600:1408:1c::42)2018041120
a6-67.akam.net (23.211.133.67)2018041120
a6-67.akam.net (2600:1401:1::43)2018041120
a9-64.akam.net (184.85.248.64)2018041120
a9-64.akam.net (2a02:26f0:117::40)2018041120

Checks

  • ✓ Serial 2018041120 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a3-66.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@akamai.com #25
    The SOA RNAME hostmaster.akamai.com means hostmaster@akamai.com.
  • ✓ Date-based serial #26
    The serial 2018041120 follows the YYYYMMDDnn convention (2018-04-11).

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

29 records at the apex

Found

Read from
193.108.91.17:53
TypeValueTTL
SOAa3-66.akam.net. hostmaster.akamai.com. 2018041120 28800 7200 604800 3600600
NSa6-67.akam.net.3600
NSa9-64.akam.net.3600
NSa16-65.akam.net.3600
NSa1-17.akam.net.3600
NSa12-64.akam.net.3600
NSa3-66.akam.net.3600
A104.102.15.10020
AAAA2a02:26f0:b700:286::3b6820
AAAA2a02:26f0:b700:29c::3b6820
MX10 tbs-com.mail.protection.outlook.com.300
MX20 mxb-00241e02.gslb.pphosted.com.300
MX20 mxa-00241e02.gslb.pphosted.com.300
TXT"4COMN3jS02bx4R6Qm34Uoxa+fQu3R3b1qm2R5ZebaZC/ETkys7usvjX3jCSmL/bfR2w1gxf7SA780ZJSt+CIRw=="600
TXT"_globalsign-domain-verification=vCFWEQ6geucGiU1QeEqeqiMH8knOn5aGsjmonQu6aQ"600
TXT"google-site-verification=ow9IDBb0qakLgtemu3PpCVMoOgT4Wm6Qp909WXnFLE0"600
TXT"_globalsign-domain-verification=KH6ZlAmsiTo0y8pxKgfewZg0s7SvnGrwkjwtwj8eEA"600
TXT"google-site-verification=Scp47h11mJ5136n7H0B2WxxgxbVxWFSrViCXh6p9X_4"600
TXT"_globalsign-domain-verification=r9rLJnNsxmQWXw8_RW5Go-Py6JYuxC6wr-H23L15pY"600
TXT"MS=ms73276556"600
TXT"ms=ms19032087"600
TXT"MS=ms78697077"600
TXT"loaderio=1d8dcc45033f488d069d72904dc49acf"600
TXT"facebook-domain-verification=8effsfqmdmxdssxo6qn7qqhjfi3blu"600
TXT"_globalsign-domain-verification=tVu2H0jjcSCBlwqpxHfgeFpE4idhigRaR9H8SwdD8c"600
TXT"v=spf1 include:tbs.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all"600
TXT"ms=ms69718428"600
TXT"MS=ms32068442"600
TXT"MS=ms65976408"600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), AAAA (20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1h; 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