leaseweb.com

Checked 22 October 2026, 09:34 UTC · via 8.8.8.8
!Passed with warnings
30 passed 1 warning 0 failed 4 info

Registration

info

.com generic · Key-Systems GmbH · expires 2027-01-22

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Key-Systems GmbH
Registered
21 January 1997
Last changed
23 January 2026
Expires
22 January 2027
Status
client delete prohibited, client transfer prohibited
Registry nameservers
ns0.leaseweb.com, ns1.leaseweb.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 2027-01-22 #3
    The registration is valid until 2027-01-22 (91 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns0.leaseweb.com, ns1.leaseweb.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns0.leaseweb.com, ns1.leaseweb.com
NS in the zone
ns0.leaseweb.com, ns1.leaseweb.com
NameserverAddressesNetwork (AS)Glue
ns0.leaseweb.com23.19.196.53 2607:f5b5::53AS7203 LEASEWEB-USA-SFO - Leaseweb USA, Inc., US AS28753 LEASEWEB-DE-FRA-10 - Leaseweb Deutschland GmbH, DE23.19.196.53 2607:f5b5::53
ns1.leaseweb.com23.19.197.53 2607:f5b5:1::53AS7203 LEASEWEB-USA-SFO - Leaseweb USA, Inc., US AS28753 LEASEWEB-DE-FRA-10 - Leaseweb Deutschland GmbH, DE23.19.197.53 2607:f5b5:1::53

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns0.leaseweb.com, ns1.leaseweb.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns0.leaseweb.com, ns1.leaseweb.com.
  • ✓ 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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS28753 (LEASEWEB-DE-FRA-10 - Leaseweb Deutschland GmbH, DE): 2 addresses; AS7203 (LEASEWEB-USA-SFO - Leaseweb USA, Inc., US): 2 addresses.
  • 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns0.leaseweb.com 23.19.196.53NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns0.leaseweb.com 2607:f5b5::53NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns1.leaseweb.com 23.19.197.53NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1.leaseweb.com 2607:f5b5:1::53NOERROR, 4 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 4 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 2026101601 · primary ns0.leaseweb.com

Found

Primary (MNAME)
ns0.leaseweb.com
Contact (RNAME)
postmaster.leaseweb.com
Serial
2026101601
Refresh / retry
7200 s / 1800 s
Expire
604800 s
Negative TTL
30 s

Serial per nameserver

NameserverSerial
ns0.leaseweb.com (23.19.196.53)2026101601
ns0.leaseweb.com (2607:f5b5::53)2026101601
ns1.leaseweb.com (23.19.197.53)2026101601
ns1.leaseweb.com (2607:f5b5:1::53)2026101601

Checks

  • ✓ Serial 2026101601 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 30s is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 2h, retry 30m, expire 7d, negative TTL 30s.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns0.leaseweb.com is one of the listed nameservers.
  • ✓ Contact postmaster@leaseweb.com #25
    The SOA RNAME postmaster.leaseweb.com means postmaster@leaseweb.com.
  • ✓ Date-based serial #26
    The serial 2026101601 follows the YYYYMMDDnn convention (2026-10-16).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
5 November 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
34591ECDSAP256SHA256 (13)SHA256 B779AC03425FAC6C…yes

DNSKEY in the zone

Key tagRoleAlgorithm
34591KSK (257)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 34591 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Signatures valid until 2026-11-05 #30
    The earliest DNSKEY/SOA signature expires at 2026-11-05 00:00 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

pass

16 records at the apex

Found

Read from
23.19.196.53:53
TypeValueTTL
SOAns0.leaseweb.com. postmaster.leaseweb.com. 2026101601 7200 1800 604800 303600
NSns1.leaseweb.com.86400
NSns0.leaseweb.com.86400
A92.223.124.623600
MX10 leaseweb-com.i-v1.mx.microsoft.3600
TXT"google-site-verification=Q1dmm70WHQoqC96y8FjrUKp0ZjSWmdf2zLG7tY6aHzk"3600
TXT"anthropic-domain-verification-nw3vc8=1dk5N9zYaTlydAhQpVi3XR1xy"3600
TXT"v=spf1 ip4:89.238.146.98 ip6:2a02:40:12::e include:spf.mxout.ocom.com include:spf.protection.outlook.com include:spf.exclaimer.net include:27248975.spf04.hubspotemail.net include:_spf.cmail.ondemand.com -all"3600
TXT"prodpad-domain-verification=VPDaVzSGJ9vQejVWMUbcrS3ZrFJK/8EPEqUHjTjk1I0="3600
TXT"docusign=f024d063-2933-480f-b048-edde9ae4d116"3600
TXT"docusign=ef8ef129-6fc1-43d8-a324-231182fb8a63"3600
CAA0 issue "digicert.com"3600
CAA0 issue "usertrust.com"3600
CAA0 issue "trust-provider.com"3600
CAA0 issue "sectigo.com"3600
CAA0 issue "letsencrypt.org"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, 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.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: digicert.com, usertrust.com, trust-provider.com, sectigo.com, letsencrypt.org.