lenovo.com

Checked 22 October 2026, 09:35 UTC · via 8.8.8.8
!Passed with warnings
25 passed 3 warnings 0 failed 3 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-09-06

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
6 September 2002
Last changed
5 August 2026
Expires
6 September 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
a1-79.akam.net, a11-64.akam.net, a24-65.akam.net, a28-66.akam.net, a3-67.akam.net, a8-64.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 2027-09-06 #3
    The registration is valid until 2027-09-06 (318 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

a1-79.akam.net, a11-64.akam.net, a24-65.akam.net, a28-66.akam.net, a3-67.akam.net, a8-64.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-79.akam.net, a11-64.akam.net, a24-65.akam.net, a28-66.akam.net, a3-67.akam.net, a8-64.akam.net
NS in the zone
a1-79.akam.net, a11-64.akam.net, a24-65.akam.net, a28-66.akam.net, a3-67.akam.net, a8-64.akam.net
NameserverAddressesNetwork (AS)Glue
a1-79.akam.net193.108.91.79 2600:1401:2::4fAS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a11-64.akam.net84.53.139.64 2600:1480:1::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a24-65.akam.net2.16.130.65 2600:1480:9800::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a28-66.akam.net95.100.173.66 2600:1480:d800::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a3-67.akam.net96.7.49.67 2600:1408:1c::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-64.akam.net2.16.40.64 2600:1403:a::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-79.akam.net, a11-64.akam.net, a24-65.akam.net, a28-66.akam.net, a3-67.akam.net, a8-64.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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 1 address; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 11 addresses.
  • 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
a1-79.akam.net 193.108.91.79NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
a1-79.akam.net 2600:1401:2::4fNOERROR, 5 ms, authoritativenoyes / yesrefused41824.5
a11-64.akam.net 84.53.139.64NOERROR, 5 ms, authoritativenoyes / yesrefused41824.8
a11-64.akam.net 2600:1480:1::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a24-65.akam.net 2.16.130.65NOERROR, 5 ms, authoritativenoyes / yesrefused48878.26
a24-65.akam.net 2600:1480:9800::41NOERROR, 5 ms, authoritativenoyes / yesrefused48878.27
a28-66.akam.net 95.100.173.66NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a28-66.akam.net 2600:1480:d800::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a3-67.akam.net 96.7.49.67NOERROR, 4 ms, authoritativenoyes / yesrefused41824.11
a3-67.akam.net 2600:1408:1c::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
a8-64.akam.net 2.16.40.64NOERROR, 5 ms, authoritativenoyes / yesrefused48878.32
a8-64.akam.net 2600:1403:a::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26

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: a1-79.akam.net: "41824.5"; a11-64.akam.net: "41824.8"; a24-65.akam.net: "48878.26"; a24-65.akam.net: "48878.27"; a28-66.akam.net: "48878.31"; a28-66.akam.net: "48878.26"; a3-67.akam.net: "41824.11"; a3-67.akam.net: "41824.10"; a8-64.akam.net: "48878.32"; a8-64.akam.net: "48878.26". 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 1833032544 · primary a1-79.akam.net

Found

Primary (MNAME)
a1-79.akam.net
Contact (RNAME)
baibt1.lenovo.com
Serial
1833032544
Refresh / retry
21600 s / 3600 s
Expire
604800 s
Negative TTL
7200 s

Serial per nameserver

NameserverSerial
a1-79.akam.net (193.108.91.79)1833032544
a1-79.akam.net (2600:1401:2::4f)1833032544
a11-64.akam.net (84.53.139.64)1833032544
a11-64.akam.net (2600:1480:1::40)1833032544
a24-65.akam.net (2.16.130.65)1833032544
a24-65.akam.net (2600:1480:9800::41)1833032544
a28-66.akam.net (95.100.173.66)1833032544
a28-66.akam.net (2600:1480:d800::42)1833032544
a3-67.akam.net (96.7.49.67)1833032544
a3-67.akam.net (2600:1408:1c::43)1833032544
a8-64.akam.net (2.16.40.64)1833032544
a8-64.akam.net (2600:1403:a::40)1833032544

Checks

  • ✓ Serial 1833032544 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 6h, retry 1h, expire 7d, negative TTL 2h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-79.akam.net is one of the listed nameservers.
  • ✓ Contact baibt1@lenovo.com #25
    The SOA RNAME baibt1.lenovo.com means baibt1@lenovo.com.
  • ✓ Timestamp serial #26
    The serial 1833032544 is a Unix timestamp (2028-02-01 15:42 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

warn

50 records at the apex

Found

Read from
193.108.91.79:53
TypeValueTTL
SOAa1-79.akam.net. baibt1.lenovo.com. 1833032544 21600 3600 604800 72007200
NSa1-79.akam.net.7200
NSa28-66.akam.net.7200
NSa8-64.akam.net.7200
NSa3-67.akam.net.7200
NSa24-65.akam.net.7200
NSa11-64.akam.net.7200
A23.45.108.21420
MX10 lenovo-com.mail.protection.outlook.com.300
TXT"adobe-idp-site-verification=5540c96206f5fe2df921a6c596ea9fb3d7e418d3eddb598c29935cc03163805b"7200
TXT"google-site-verification=vyPsFusgDLeWzvnapRyBbiva5dXJ1JIJjcNbGuO52-k"7200
TXT"_globalsign-domain-verification=feXxUwi7bGccktj7bI7l7OYmFCm_x8ogmN1-U4Hu-T"7200
TXT"atlassian-domain-verification=Vx1wgyd3FWPEj1cw8sYFv4k6przB3O0EzfmiVawbgV4nMmAqY0fcCo6BeaOrg24G"7200
TXT"ece42d7743c84d6889abda7011fe6f53"7200
TXT"smartsheet-site-validation=rRKFFSIrRIhcJ7s3nfiTgTC_jH46Dlu_"7200
TXT"google-site-verification=hxNSoF46anzjUtyFgpRVpzshTkYClFBJ7OAT3Dz6440"7200
TXT"google-site-verification=nGgukcp60rC-gFxMOJw1NHH0B4VnSchRrlfWV-He_tE"7200
TXT"a82c74b37aa84e7c8580f0e32f4d795d"7200
TXT"qh7hdmqm4lzs85p704d6wsybgrpsly0j"7200
TXT"facebook-domain-verification=1r2am7c2bhzrxpqyt0mda0djoquqsi"7200
TXT"google-site-verification=VxW_e6r_Ka7A518qfX2MmIMHGnkpGbnACsjSxKFCBw0"7200
TXT"x1n4n7dfpt5hlqlv6vpbtg2czj5bk2y8"7200
TXT"figma-domain-verification=8b6b33942e392f3a6b635697b081e78986a6854d82587c11ae4b1b3bd257b6f1-1784306874"7200
TXT"google-gws-recovery-domain-verification=53030486"7200
TXT"iEf8OeY/ebUNJkh8rH9jcDmdS7Uq9B5wNePdkhhqLVHgHP4eekupSYlmdsz+e3Y59/XTCbHY40h1BtI5cpfDJw=="7200
TXT"figma-domain-verification=77471062f3395d7cb96639684e519d0b3d276830c64ca7e17ea13b8f28203680-1772698461"7200
TXT"_dnsauth=4hlzyrmrk0hdkk4c96qw745ll5h58x35"7200
TXT"v=spf1 include:spf.lenovo.com include:vendorspf.lenovo.com ~all"7200
TXT"pendo-domain-verification=KCqOPkCxJXwRvhV7udrsxm7aBQg"7200
TXT"Dynatrace-site-verification=9bffa29b-0dbd-4e8f-8c8c-b28fca3b1bdf__49s5b44hnes32j605089h3f60a"7200
TXT"duo_sso_verification=2eFmztpfk73LXpFC92aOkVdh4qWYBJ169vmf2WqC2omGJBXPVugwvp3gTFjX8cr2"7200
TXT"google-site-verification=247PPmmalrNARHoE2rmOJ3YQygtMquQwLpM_LzVXsFg"7200
TXT"cursor-domain-verification-k5ed5k=vc6Qb8LpyNVHcyT7pkGQklhoh"7200
TXT"63posrsg6o3q95dtuc80da228n"7200
TXT"openai-domain-verification=dv-w6UANk0E74dbpJI3mTMHPfxP"7200
TXT"_0nv5veu70xwpobopaobpzyaqo6i9iv8"7200
TXT"airtable-verification=1d5415310fbcf1fdc72c0b175208089a"7200
TXT"google-site-verification=IGQvpRBrmSETWSziSpzxK4YIjUVeTyNb5mTytcatDD8"7200
TXT"google-site-verification=HESboqU3DntBTT9PbwXRvCBnD3atK7HWgIcv3TJcllw"7200
TXT"google-site-verification=1dLAd9aAmT5IZx0wSSkxrD-Fk3izPYLC3Hw_nCQ56sw"7200
TXT"qctqpsq058s3t12m0rjf2jxw8jnvn0zr"7200
TXT"MS=ms38130575"7200
TXT"duo_sso_verification=sKtyF9pQMvjVPX6vq4nzV00r7qKNkEVAkkb0Tlx1om1ZqroOG1eZEexVxJr0kfAY"7200
TXT"google-site-verification=KT4YATm6NeQqaD0WLCJtFOjb0gYXhbzUekUM9Rm-fb8"7200
TXT"4b60110d90a0ba16827618f3165cf720c5458664c9392ea157363087784e0292"7200
TXT"google-site-verification=sHIlSlj0U6UnCDkfHp1AolWgVEvDjWvc0TR4KaysD2c"7200
TXT"Visit www.lenovo.com/think for information about Lenovo products and services"7200
TXT"fastly-domain-delegation-Gg2T0SlTwT-2021-03-09"7200
TXT"atlassian-domain-verification=lBI3riiS/hlfifAaegKM2zDr7vf//HR7mVq7kfQbtMrynu8eQKK3NyDc7EVwWPRs"7200
TXT"_globalsign-domain-verification=4qaYYFkDr3zY8xFnX817RHQdbwKtr7S6GWVF9HLJ3P"7200

Checks

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