int-res.com

Checked 22 October 2026, 09:20 UTC · via 8.8.8.8
!Passed with warnings
23 passed 3 warnings 0 failed 5 info

Registration

info

.com generic · IONOS SE · expires 2027-01-10

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
IONOS SE
Registered
11 January 1995
Last changed
11 January 2026
Expires
10 January 2027
Status
client transfer prohibited
Registry nameservers
ns1018.ui-dns.com, ns1025.ui-dns.biz, ns1027.ui-dns.org, ns1118.ui-dns.de
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 2027-01-10 #3
    The registration is valid until 2027-01-10 (79 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

ns1018.ui-dns.com, ns1025.ui-dns.biz, ns1027.ui-dns.org, ns1118.ui-dns.de

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1018.ui-dns.com, ns1025.ui-dns.biz, ns1027.ui-dns.org, ns1118.ui-dns.de
NS in the zone
ns1018.ui-dns.com, ns1025.ui-dns.biz, ns1027.ui-dns.org, ns1118.ui-dns.de
NameserverAddressesNetwork (AS)Glue
ns1018.ui-dns.com185.132.34.18 2607:f1c0:fe:53:185:132:34:18AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB2001:8d8:fe:53:0:d9a0:5212:100 217.160.82.18
ns1025.ui-dns.biz185.132.33.25 2607:f1c0:fe:53:185:132:33:25AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1027.ui-dns.org185.132.35.27 2607:f1c0:fe:53:185:132:35:27AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-
ns1118.ui-dns.de185.132.32.118 2607:f1c0:fe:53:185:132:32:118AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1018.ui-dns.com, ns1025.ui-dns.biz, ns1027.ui-dns.org, ns1118.ui-dns.de.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns1018.ui-dns.com (glue 2001:8d8:fe:53:0:d9a0:5212:100, 217.160.82.18, zone 185.132.34.18, 2607:f1c0:fe:53:185:132:34:18). Update the glue at your registrar.
    #8
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • i
    One address family in one network
    all IPv6 addresses are in 2607:f1c0:fe::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 8 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 .biz, .com, .de, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1018.ui-dns.com 185.132.34.18NOERROR, 5 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1018.ui-dns.com 2607:f1c0:fe:53:185:132:34:18NOERROR, 5 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1025.ui-dns.biz 185.132.33.25NOERROR, 5 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1025.ui-dns.biz 2607:f1c0:fe:53:185:132:33:25NOERROR, 5 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1027.ui-dns.org 185.132.35.27NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1027.ui-dns.org 2607:f1c0:fe:53:185:132:35:27NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1118.ui-dns.de 185.132.32.118NOERROR, 5 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns1118.ui-dns.de 2607:f1c0:fe:53:185:132:32:118NOERROR, 5 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

Checks

  • ✓ All respond #14
    All 8 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: ns1018.ui-dns.com: "Served by PowerDNS - https://www.powerdns.com/"; ns1025.ui-dns.biz: "Served by PowerDNS - https://www.powerdns.com/"; ns1027.ui-dns.org: "Served by PowerDNS - https://www.powerdns.com/"; ns1118.ui-dns.de: "Served by PowerDNS - https://www.powerdns.com/".
    #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 2017061464 · primary ns1027.ui-dns.org

Found

Primary (MNAME)
ns1027.ui-dns.org
Contact (RNAME)
hostmaster.1und1.com
Serial
2017061464
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns1018.ui-dns.com (185.132.34.18)2017061464
ns1018.ui-dns.com (2607:f1c0:fe:53:185:132:34:18)2017061464
ns1025.ui-dns.biz (185.132.33.25)2017061464
ns1025.ui-dns.biz (2607:f1c0:fe:53:185:132:33:25)2017061464
ns1027.ui-dns.org (185.132.35.27)2017061464
ns1027.ui-dns.org (2607:f1c0:fe:53:185:132:35:27)2017061464
ns1118.ui-dns.de (185.132.32.118)2017061464
ns1118.ui-dns.de (2607:f1c0:fe:53:185:132:32:118)2017061464

Checks

  • ✓ Serial 2017061464 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1027.ui-dns.org is one of the listed nameservers.
  • ✓ Contact hostmaster@1und1.com #25
    The SOA RNAME hostmaster.1und1.com means hostmaster@1und1.com.
  • ✓ Date-based serial #26
    The serial 2017061464 follows the YYYYMMDDnn convention (2017-06-14).

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

11 records at the apex

Found

Read from
185.132.34.18:53
TypeValueTTL
SOAns1027.ui-dns.org. hostmaster.1und1.com. 2017061464 28800 7200 604800 60086400
NSns1018.ui-dns.com.86400
NSns1025.ui-dns.biz.86400
NSns1027.ui-dns.org.86400
NSns1118.ui-dns.de.86400
A93.93.202.18860
AAAA2a11:6c81:1:1fa:1:1ff:fe20:760
MX20 d319175.b.ess.de.barracudanetworks.com.3600
MX10 d319175.a.ess.de.barracudanetworks.com.3600
TXT"v=spf1 ip4:104.193.74.81 a:hz16.silpion.de include:_spf.perfora.net include:_spf.kundenserver.de include:spf.protection.outlook.com ~all"3600
TXT"v=verifydomain MS=9698484"3600

Checks

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