udn.com

Checked 22 October 2026, 11:15 UTC · via 8.8.8.8
!Passed with warnings
25 passed 3 warnings 0 failed 3 info

Registration

info

.com generic · Network Solutions, LLC · expires 2031-09-09

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
10 September 1998
Last changed
27 March 2026
Expires
9 September 2031
Status
client transfer prohibited
Registry nameservers
a1-8.akam.net, a13-65.akam.net, a2-66.akam.net, a26-67.akam.net, a7-64.akam.net, a8-65.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 2031-09-09 #3
    The registration is valid until 2031-09-09 (1782 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

info

a1-8.akam.net, a13-65.akam.net, a2-66.akam.net, a26-67.akam.net, a7-64.akam.net, a8-65.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-8.akam.net, a13-65.akam.net, a2-66.akam.net, a26-67.akam.net, a7-64.akam.net, a8-65.akam.net
NS in the zone
a1-8.akam.net, a13-65.akam.net, a2-66.akam.net, a26-67.akam.net, a7-64.akam.net, a8-65.akam.net
NameserverAddressesNetwork (AS)Glue
a1-8.akam.net193.108.91.8 2600:1401:2::8AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a13-65.akam.net2.22.230.65 2600:1480:800::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a2-66.akam.net95.100.174.66 2600:1480:7000::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a26-67.akam.net23.74.25.67 2600:1480:b800::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-64.akam.net23.61.199.64 2600:1406:32::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-65.akam.net2.16.40.65 2600:1403:a::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-8.akam.net, a13-65.akam.net, a2-66.akam.net, a26-67.akam.net, a7-64.akam.net, a8-65.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
a1-8.akam.net 193.108.91.8NOERROR, 3 ms, authoritativenoyes / yesrefused41824.7
a1-8.akam.net 2600:1401:2::8NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
a13-65.akam.net 2.22.230.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
a13-65.akam.net 2600:1480:800::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a2-66.akam.net 95.100.174.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a2-66.akam.net 2600:1480:7000::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a26-67.akam.net 23.74.25.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a26-67.akam.net 2600:1480:b800::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a7-64.akam.net 23.61.199.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.7
a7-64.akam.net 2600:1406:32::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.4
a8-65.akam.net 2.16.40.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.30
a8-65.akam.net 2600:1403:a::41NOERROR, 3 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: a1-8.akam.net: "41824.7"; a1-8.akam.net: "41824.6"; a13-65.akam.net: "41824.5"; a13-65.akam.net: "41824.8"; a2-66.akam.net: "48878.33"; a26-67.akam.net: "48878.31"; a26-67.akam.net: "48878.32"; a7-64.akam.net: "41824.7"; a7-64.akam.net: "41824.4"; a8-65.akam.net: "48878.30"; a8-65.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 2016033366 · primary a1-8.akam.net

Found

Primary (MNAME)
a1-8.akam.net
Contact (RNAME)
root.udn.com
Serial
2016033366
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
a1-8.akam.net (193.108.91.8)2016033366
a1-8.akam.net (2600:1401:2::8)2016033366
a13-65.akam.net (2.22.230.65)2016033366
a13-65.akam.net (2600:1480:800::41)2016033366
a2-66.akam.net (95.100.174.66)2016033366
a2-66.akam.net (2600:1480:7000::42)2016033366
a26-67.akam.net (23.74.25.67)2016033366
a26-67.akam.net (2600:1480:b800::43)2016033366
a7-64.akam.net (23.61.199.64)2016033366
a7-64.akam.net (2600:1406:32::40)2016033366
a8-65.akam.net (2.16.40.65)2016033366
a8-65.akam.net (2600:1403:a::41)2016033366

Checks

  • ✓ Serial 2016033366 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-8.akam.net is one of the listed nameservers.
  • ✓ Contact root@udn.com #25
    The SOA RNAME root.udn.com means root@udn.com.
  • ✓ Timestamp serial #26
    The serial 2016033366 is a Unix timestamp (2033-11-19 17:16 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

27 records at the apex

Found

Read from
193.108.91.8:53
TypeValueTTL
SOAa1-8.akam.net. root.udn.com. 2016033366 10800 3600 604800 864003600
NSa8-65.akam.net.3600
NSa13-65.akam.net.3600
NSa26-67.akam.net.3600
NSa7-64.akam.net.3600
NSa2-66.akam.net.3600
NSa1-8.akam.net.3600
A104.82.100.2920
MX5 alt2.aspmx.l.google.com.360
MX1 aspmx.l.google.com.360
MX5 alt1.aspmx.l.google.com.360
MX10 aspmx3.googlemail.com.360
MX10 aspmx2.googlemail.com.360
MX10 aspmx5.googlemail.com.360
MX10 aspmx4.googlemail.com.360
TXT"google-site-verification=xtYeU0pefZgwrfVRta3C_6ODdIpOPW-ns3eMeMAnqaw"360
TXT"globalsign-domain-verification=kKi4OBAKqqY_rwnowqFz2Pi11_QrGf2uepOIh0xNUX"360
TXT"hbj99p2bn3t406v4bq6nfqv58wsyn4by"360
TXT"facebook-domain-verification=q2zi52vygqe90tmke6atrhmwj3eiqb"360
TXT"jh1cgak4i37amgtafdmt1f0ach"360
TXT"google-site-verification=gu12aPf0guVByHlm378G3O0A4GjqB_r4T9FSLl8pd2I"360
TXT"globalsign-domain-verification=ob3pB3lS4g2lposFDuPNppEjB8eaUjC1pr4SOy4rzy"360
TXT"v=spf1 include:spf01.udn.com include:spf02.udn.com include:spf03.udn.com ?all"360
TXT"google-site-verification=NfLKlM7Vbn7NphCXYWLjhQGROAzzOn0yUknMYH3oI3g"360
TXT"facebook-domain-verification=871kqh5y7y9az68k957o74y0l1tmiv"360
TXT"_03rm48jgds64n0nnhlhijrfqao7a38a"360
TXT"globalsign-domain-verification=r7gmIBCZ67Ov_KpNj6v_oskqEiUrFAcPuvBceYpaYy"360

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 1h; 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