omio.com

Checked 22 October 2026, 10:05 UTC · via 8.8.8.8
!Passed with warnings
23 passed 3 warnings 0 failed 5 info

Registration

warn

.com generic · InterNetX GmbH · expires 2026-11-20

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
InterNetX GmbH
Registered
20 November 2000
Last changed
21 November 2025
Expires
20 November 2026
Status
client transfer prohibited
Registry nameservers
sofia.ns.cloudflare.com, vern.ns.cloudflare.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 in 29 days
    The registration expires on 2026-11-20. Make sure it is renewed.
    #3
  • ✓ 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

info

sofia.ns.cloudflare.com, vern.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
sofia.ns.cloudflare.com, vern.ns.cloudflare.com
NS in the zone
sofia.ns.cloudflare.com, vern.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
sofia.ns.cloudflare.com172.64.32.223 108.162.192.223 173.245.58.223 2a06:98c1:50::ac40:20df 2606:4700:50::adf5:3adf 2803:f800:50::6ca2:c0dfAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.192.223 172.64.32.223 173.245.58.223 2606:4700:50::adf5:3adf 2803:f800:50::6ca2:c0df 2a06:98c1:50::ac40:20df
vern.ns.cloudflare.com108.162.193.243 172.64.33.243 173.245.59.243 2803:f800:50::6ca2:c1f3 2606:4700:58::adf5:3bf3 2a06:98c1:50::ac40:21f3AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.193.243 172.64.33.243 173.245.59.243 2606:4700:58::adf5:3bf3 2803:f800:50::6ca2:c1f3 2a06:98c1:50::ac40:21f3

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: sofia.ns.cloudflare.com, vern.ns.cloudflare.com.
    #6
  • ✓ 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 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 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 .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

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
sofia.ns.cloudflare.com 172.64.32.223NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
sofia.ns.cloudflare.com 108.162.192.223NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
sofia.ns.cloudflare.com 173.245.58.223NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
sofia.ns.cloudflare.com 2a06:98c1:50::ac40:20dfNOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
sofia.ns.cloudflare.com 2606:4700:50::adf5:3adfNOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
sofia.ns.cloudflare.com 2803:f800:50::6ca2:c0dfNOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
vern.ns.cloudflare.com 108.162.193.243NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
vern.ns.cloudflare.com 172.64.33.243NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
vern.ns.cloudflare.com 173.245.59.243NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
vern.ns.cloudflare.com 2803:f800:50::6ca2:c1f3NOERROR, 10 ms, authoritativenoyes / yesrefused2026.10.2
vern.ns.cloudflare.com 2606:4700:58::adf5:3bf3NOERROR, 10 ms, authoritativenoyes / yesrefused2026.10.2
vern.ns.cloudflare.com 2a06:98c1:50::ac40:21f3NOERROR, 10 ms, authoritativenoyes / yesrefused2026.10.2

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: sofia.ns.cloudflare.com: "2026.10.2"; vern.ns.cloudflare.com: "2026.10.2". 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 2417529714 · primary sofia.ns.cloudflare.com

Found

Primary (MNAME)
sofia.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417529714
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
sofia.ns.cloudflare.com (172.64.32.223)2417529714
sofia.ns.cloudflare.com (108.162.192.223)2417529714
sofia.ns.cloudflare.com (173.245.58.223)2417529714
sofia.ns.cloudflare.com (2a06:98c1:50::ac40:20df)2417529714
sofia.ns.cloudflare.com (2606:4700:50::adf5:3adf)2417529714
sofia.ns.cloudflare.com (2803:f800:50::6ca2:c0df)2417529714
vern.ns.cloudflare.com (108.162.193.243)2417529714
vern.ns.cloudflare.com (172.64.33.243)2417529714
vern.ns.cloudflare.com (173.245.59.243)2417529714
vern.ns.cloudflare.com (2803:f800:50::6ca2:c1f3)2417529714
vern.ns.cloudflare.com (2606:4700:58::adf5:3bf3)2417529714
vern.ns.cloudflare.com (2a06:98c1:50::ac40:21f3)2417529714

Checks

  • ✓ Serial 2417529714 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver sofia.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417529714 is a Unix timestamp (2046-08-10 16:01 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

19 records at the apex

Found

Read from
172.64.32.223:53
TypeValueTTL
SOAsofia.ns.cloudflare.com. dns.cloudflare.com. 2417529714 10000 2400 604800 18001800
NSsofia.ns.cloudflare.com.86400
NSvern.ns.cloudflare.com.86400
A104.18.32.114300
A172.64.155.142300
AAAA2606:4700:440c::ac40:9b8e300
AAAA2a06:98c1:3104::6812:2072300
MX1 aspmx.l.google.com.300
MX10 aspmx2.googlemail.com.300
MX10 aspmx3.googlemail.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"1password-site-verification=YGNNX52I5RAT3JYUDHM673FQRI"120
TXT"MS=ms91676843"120
TXT"TAILSCALE-U1n9rtsRAHB18bnoUKWB"120
TXT"apple-domain-verification=Kan4Vnp7o4Aq00cX"120
TXT"google-site-verification=SXp9uxLiE0ydkFYHaROu1Pfko7uZYSxyfzVpN1ykdqc"120
TXT"openai-domain-verification=dv-km213RT9353kEA3NcMXwHnGT"120
TXT"v=spf1 include:_spf.google.com include:spf.mandrillapp.com include:mail.zendesk.com include:mailgun.org include:sendgrid.net ip4:172.253.122.26 ip4:172.253.116.27 ip4:192.178.223.26 ip4:172.253.116.26 ip6:2607:f8b0:4004:c1d::1a ip6:2a00:1450:400b:c02::1b " "ip6:2a00:1450:4009:c0f::1a ip4:198.244.232.92 ip4:31.121.80.90 ip4:217.196.249.146 ip4:217.196.249.151 ip4:79.173.134.5 ip4:109.123.121.243 ip4:93.89.95.93 ip4:193.192.51.101 ip4:208.109.80.0/24 ip4:193.192.51.102 ip4:208.109.80.198 ip4:193.192.51.85 ip4:" "54.37.244.145 ip4:1.68.139.58 ip4:198.244.61.9 ip4:198.244.59.95 ~all"120

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, 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.
  • 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