vercel.com

Checked 22 October 2026, 11:21 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · Amazon Registrar, Inc. · expires 2029-10-04

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
4 October 1999
Last changed
16 May 2026
Expires
4 October 2029
Status
client transfer prohibited
Registry nameservers
a.zeit-world.co.uk, b.zeit-world.org, e.zeit-world.com, f.zeit-world.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 2029-10-04 #3
    The registration is valid until 2029-10-04 (1078 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

a.zeit-world.co.uk, b.zeit-world.org, e.zeit-world.com, f.zeit-world.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a.zeit-world.co.uk, b.zeit-world.org, e.zeit-world.com, f.zeit-world.net
NS in the zone
ns1.vercel-dns.com, ns2.vercel-dns.com
NameserverAddressesNetwork (AS)Glue
a.zeit-world.co.uk (parent only)198.51.44.13 2620:4d:4000:6259:7:13:0:1AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
b.zeit-world.org (parent only)198.51.45.13 2a00:edc0:6259:7:13::2AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
e.zeit-world.com (parent only)198.51.44.13 2620:4d:4000:6259:7:13:0:1AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US198.51.44.13 2620:4d:4000:6259:7:13:0:1
f.zeit-world.net (parent only)198.51.45.13AS62597 NSONE - NSONE Inc, US-
ns1.vercel-dns.com (zone only)198.51.44.13 2620:4d:4000:6259:7:13:0:1AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
ns2.vercel-dns.com (zone only)198.51.45.13 2a00:edc0:6259:7:13::2AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to a.zeit-world.co.uk, b.zeit-world.org, e.zeit-world.com, f.zeit-world.net.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: a.zeit-world.co.uk, b.zeit-world.org, e.zeit-world.com, f.zeit-world.net; only in the zone: ns1.vercel-dns.com, ns2.vercel-dns.com. a.zeit-world.co.uk, b.zeit-world.org, e.zeit-world.com, f.zeit-world.net, ns1.vercel-dns.com, ns2.vercel-dns.com report NS ns1.vercel-dns.com ns2.vercel-dns.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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS62597 (NSONE - NSONE Inc, US): 11 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .net, .org, .uk.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: f.zeit-world.net.
    #13

Nameservers

info

11 of 11 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a.zeit-world.co.uk 198.51.44.13NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
a.zeit-world.co.uk 2620:4d:4000:6259:7:13:0:1NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
b.zeit-world.org 198.51.45.13NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
b.zeit-world.org 2a00:edc0:6259:7:13::2NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
e.zeit-world.com 198.51.44.13NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
e.zeit-world.com 2620:4d:4000:6259:7:13:0:1NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
f.zeit-world.net 198.51.45.13NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns1.vercel-dns.com 198.51.44.13NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns1.vercel-dns.com 2620:4d:4000:6259:7:13:0:1NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns2.vercel-dns.com 198.51.45.13NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns2.vercel-dns.com 2a00:edc0:6259:7:13::2NOERROR, 9 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9

Checks

  • ✓ All respond #14
    All 11 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: a.zeit-world.co.uk: "19dd46e347df36b70933bf2be8023258586586a9"; b.zeit-world.org: "19dd46e347df36b70933bf2be8023258586586a9"; e.zeit-world.com: "19dd46e347df36b70933bf2be8023258586586a9"; f.zeit-world.net: "19dd46e347df36b70933bf2be8023258586586a9"; ns1.vercel-dns.com: "19dd46e347df36b70933bf2be8023258586586a9"; ns2.vercel-dns.com: "19dd46e347df36b70933bf2be8023258586586a9".
    #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 1657718860 · primary ns1.vercel-dns.com

Found

Primary (MNAME)
ns1.vercel-dns.com
Contact (RNAME)
hostmaster.nsone.net
Serial
1657718860
Refresh / retry
43200 s / 7200 s
Expire
1209600 s
Negative TTL
14400 s

Serial per nameserver

NameserverSerial
a.zeit-world.co.uk (198.51.44.13)1657718860
a.zeit-world.co.uk (2620:4d:4000:6259:7:13:0:1)1657718860
b.zeit-world.org (198.51.45.13)1657718860
b.zeit-world.org (2a00:edc0:6259:7:13::2)1657718860
e.zeit-world.com (198.51.44.13)1657718860
e.zeit-world.com (2620:4d:4000:6259:7:13:0:1)1657718860
f.zeit-world.net (198.51.45.13)1657718860
ns1.vercel-dns.com (198.51.44.13)1657718860
ns1.vercel-dns.com (2620:4d:4000:6259:7:13:0:1)1657718860
ns2.vercel-dns.com (198.51.45.13)1657718860
ns2.vercel-dns.com (2a00:edc0:6259:7:13::2)1657718860

Checks

  • ✓ Serial 1657718860 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 2h, expire 14d, negative TTL 4h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.vercel-dns.com is one of the listed nameservers.
  • ✓ Contact hostmaster@nsone.net #25
    The SOA RNAME hostmaster.nsone.net means hostmaster@nsone.net.
  • ✓ Timestamp serial #26
    The serial 1657718860 is a Unix timestamp (2022-07-13 13:27 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

50 records at the apex

Found

Read from
198.51.44.13:53
TypeValueTTL
SOAns1.vercel-dns.com. hostmaster.nsone.net. 1657718860 43200 7200 1209600 144003600
NSns1.vercel-dns.com.86400
NSns2.vercel-dns.com.86400
A64.239.109.1291800
A64.239.123.11800
MX1 aspmx.l.google.com.1800
MX5 alt1.aspmx.l.google.com.1800
MX5 alt2.aspmx.l.google.com.1800
MX10 aspmx2.googlemail.com.1800
MX10 aspmx3.googlemail.com.1800
TXT"google-site-verification=J9NjkBE_oybWpa-OHAkV0VjSjIvIBMfp83tdsQCzxK8"1800
TXT"v=spf1 include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com include:mktomail.com include:amazonses.com include:sendgrid.net include:_spf.salesforce.com include:spf.mtasv.net ~all"1800
TXT"doordash-verification=kA2ozHfLLU2lEpqQVmJO7DRKwZArKO"1800
TXT"ahrefs-site-verification_774361e47cac589ba5ff743f90399b1e5792980bd22f0f4c56bfb1eaf571a7e0"1800
TXT"stripe-verification=8ff198a026ba2920fd8f4e45bcc499573d1a342596c6f0f18f3eae226bb8173a"1800
TXT"apple-domain-verification=80dYVZTf3bf7C8H5"1800
TXT"ZOOM_verify_iAqiiWW1TdK-GwbJI7qn1g"1800
TXT"stripe-verification=923c7c6074dc94f4b22136b4236a1dc5433a3276b5fc981799771f781d7a6058"1800
TXT"stripe-verification=69ef655819f74eb6f93f9f7388273112ee8c2439b35502785239d3bf076af574"1800
TXT"MS=ms81951275"1800
TXT"mixpanel-domain-verify=3069307c-7d73-4581-880a-1b61267d06cb"1800
TXT"C575019D1B"1800
TXT"SFMC-JchuOOQGseLonwnFdKq2xDV5UnqnvJRjMKyh7rwz"1800
TXT"loom-verification=5698251381"1800
TXT"notion_verify_82^tYP%}6Q65dbszXu>V?@~stLe]Cm3Dmn8rqe7DZgT1m3o!+PyEbv+Jx04rb%v67BtbG>"1800
TXT"docusign=589bb007-2665-4084-b839-9874df0da0cf"1800
TXT"docusign=8a27eabb-2ba5-4820-a148-36b0ac9f592b"1800
TXT"h1-domain-verification=DmNbUeH65JZUKDLixLxWCEfvFiJcCP6sSR3ymQ3MamqmMN2K"1800
TXT"_saml-domain-challenge=1b4981f2-76a2-401f-8f09-a261a97099af"1800
TXT"whimsical=34ebc92242a47d7e9a6ae5f42f60ad80fccbf094"1800
TXT"_visual-studio-marketplace-vercel.vercel.com:4fe5630e-b256-4d57-9e03-88abeab96b37"1800
TXT"openai-domain-verification=dv-RrobMXwsu06yBo22YAOsZdxP"1800
TXT"stripe-verification=e6c56a2c1de7a8a001d69362c33e8ee39536606dae859f9e5fef982ecd102696"1800
TXT"stripe-verification=D353787AECFE3E8DF14A07DF171A7A0529DB83B8D7CD0C5FD89A9C42A255E38E"1800
TXT"cursor-domain-verification-f3eygw=YMP9VK0KY2xhJrRKFMpkkyhv1"1800
TXT"_k57cawuboit4hp2k6rv5bjbxuvkznwp"1800
TXT"anthropic-domain-verification-08hmep=rIoWryrKgeXgTzXsASQqNA99q"1800
TXT"remote-domain-verification=8be9341d-2ab7-4de7-a26f-68c6af2b30ac"1800
TXT"box-domain-verification=968b9e475ce3f9a3bf3a2436eed2cd67082d8312f5e6559eaa7e1d1514fe03aa"1800
TXT"v=MCPv1; k=ed25519; p=53H31Wxaf08fBk8IOIjlWrxy4pK9KGrLRVSB8WSu8rY="1800
TXT"serval-domain-verification-40ct5x=VbdjZnWHkRJwpBE0IwXuriy03"1800
TXT"amp-by-sourcegraph-domain-verification-st5f9e=172nCAgVw3POSEMQGXOv24XWO"1800
TXT"plain-domain-verification-vkhaan=eY1PYorYjiTuIxRpcsIDKi19X"1800
TXT"carta-domain-verification-wnnawd=jFGjeToDS0JE6iRBOq79AjxaD"1800
TXT"gather-domain-verification=911fa583-4323-4bc7-9a43-a29ae4a6003e"1800
TXT"planet-scale-domain-verification-hx2k58=gjkMML1gwBAfWtiNyHI4qMBL1"1800
CAA0 issue "letsencrypt.org"1800
CAA0 issue "globalsign.com"1800
CAA0 issue "sectigo.com"1800
CAA0 issue "pki.goog"1800

Checks

  • ✓ TTLs within range #32
    TTLs: A 30m, MX 30m, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: letsencrypt.org, globalsign.com, sectigo.com, pki.goog.