intercontinental.com

Checked 22 October 2026, 09:21 UTC · via 8.8.8.8
!Passed with warnings
22 passed 5 warnings 0 failed 4 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-07-29

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
30 July 1997
Last changed
27 June 2026
Expires
29 July 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
a1-131.akam.net, a16-66.akam.net, a26-67.akam.net, a28-64.akam.net, a5-65.akam.net, a9-66.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 2027-07-29 #3
    The registration is valid until 2027-07-29 (279 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

a1-131.akam.net, a16-66.akam.net, a26-67.akam.net, a28-64.akam.net, a5-65.akam.net, a9-66.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-131.akam.net, a16-66.akam.net, a26-67.akam.net, a28-64.akam.net, a5-65.akam.net, a9-66.akam.net
NS in the zone
a1-131.akam.net, a16-66.akam.net, a26-67.akam.net, a4-64.akam.net, a5-65.akam.net, a9-66.akam.net
NameserverAddressesNetwork (AS)Glue
a1-131.akam.net193.108.91.131 2600:1401:2::83AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a16-66.akam.net23.211.132.66 2600:1406:1b::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-
a28-64.akam.net (parent only)95.100.173.64 2600:1480:d800::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a4-64.akam.net (zone only)72.246.46.64 2600:1480:9000::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a5-65.akam.net95.100.168.65 2600:1480:b000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-66.akam.net184.85.248.66 2a02:26f0:117::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-131.akam.net, a16-66.akam.net, a26-67.akam.net, a28-64.akam.net, a5-65.akam.net, a9-66.akam.net.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: a28-64.akam.net; only in the zone: a4-64.akam.net. a1-131.akam.net, a16-66.akam.net, a26-67.akam.net, a28-64.akam.net, a4-64.akam.net, a5-65.akam.net, a9-66.akam.net report NS a1-131.akam.net a16-66.akam.net a26-67.akam.net a4-64.akam.net a5-65.akam.net a9-66.akam.net.
    #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 7 IPv4 /24s and 7 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 14 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 .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

14 of 14 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-131.akam.net 193.108.91.131NOERROR, 3 ms, authoritativenoyes / yesrefused41824.6
a1-131.akam.net 2600:1401:2::83NOERROR, 5 ms, authoritativenoyes / yesrefused41824.9
a16-66.akam.net 23.211.132.66NOERROR, 5 ms, authoritativenoyes / yesrefused48878.27
a16-66.akam.net 2600:1406:1b::42NOERROR, 5 ms, authoritativenoyes / yesrefused48878.27
a26-67.akam.net 23.74.25.67NOERROR, 6 ms, authoritativenoyes / yesrefused48878.27
a26-67.akam.net 2600:1480:b800::43NOERROR, 5 ms, authoritativenoyes / yesrefused48878.26
a28-64.akam.net 95.100.173.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a28-64.akam.net 2600:1480:d800::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a4-64.akam.net 72.246.46.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a4-64.akam.net 2600:1480:9000::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a5-65.akam.net 95.100.168.65NOERROR, 5 ms, authoritativenoyes / yesrefused41824.7
a5-65.akam.net 2600:1480:b000::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a9-66.akam.net 184.85.248.66NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a9-66.akam.net 2a02:26f0:117::42NOERROR, 6 ms, authoritativenoyes / yesrefused41824.4

Checks

  • ✓ All respond #14
    All 14 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: a1-131.akam.net: "41824.6"; a1-131.akam.net: "41824.9"; a16-66.akam.net: "48878.27"; a26-67.akam.net: "48878.27"; a26-67.akam.net: "48878.26"; a28-64.akam.net: "48878.32"; a28-64.akam.net: "48878.31"; a4-64.akam.net: "48878.33"; a4-64.akam.net: "48878.29"; a5-65.akam.net: "41824.7"; a5-65.akam.net: "41824.8"; a9-66.akam.net: "41824.8"; a9-66.akam.net: "41824.4". 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

warn

serial 2015051924 · primary a1-131.akam.net

Found

Primary (MNAME)
a1-131.akam.net
Contact (RNAME)
hostmaster.akamai.com
Serial
2015051924
Refresh / retry
86400 s / 7200 s
Expire
2419200 s
Negative TTL
172800 s

Serial per nameserver

NameserverSerial
a1-131.akam.net (193.108.91.131)2015051924
a1-131.akam.net (2600:1401:2::83)2015051924
a16-66.akam.net (23.211.132.66)2015051924
a16-66.akam.net (2600:1406:1b::42)2015051924
a26-67.akam.net (23.74.25.67)2015051924
a26-67.akam.net (2600:1480:b800::43)2015051924
a28-64.akam.net (95.100.173.64)2015051924
a28-64.akam.net (2600:1480:d800::40)2015051924
a4-64.akam.net (72.246.46.64)2015051924
a4-64.akam.net (2600:1480:9000::40)2015051924
a5-65.akam.net (95.100.168.65)2015051924
a5-65.akam.net (2600:1480:b000::41)2015051924
a9-66.akam.net (184.85.248.66)2015051924
a9-66.akam.net (2a02:26f0:117::42)2015051924

Checks

  • ✓ Serial 2015051924 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 2d is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1d, retry 2h, expire 28d, negative TTL 2d.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-131.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@akamai.com #25
    The SOA RNAME hostmaster.akamai.com means hostmaster@akamai.com.
  • ✓ Date-based serial #26
    The serial 2015051924 follows the YYYYMMDDnn convention (2015-05-19).

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

22 records at the apex

Found

Read from
193.108.91.131:53
TypeValueTTL
SOAa1-131.akam.net. hostmaster.akamai.com. 2015051924 86400 7200 2419200 1728003600
NSa1-131.akam.net.600
NSa16-66.akam.net.600
NSa4-64.akam.net.600
NSa5-65.akam.net.600
NSa26-67.akam.net.600
NSa9-66.akam.net.600
A2.16.204.15920
A2.16.204.15320
AAAA2a02:26f0:b700:5::210:cc0a20
AAAA2a02:26f0:b700:5::210:cc1b20
MX0 mxa-0036c501.gslb.pphosted.com.300
MX0 mxb-0036c501.gslb.pphosted.com.300
TXT"_tibpx37z3xiows2c5vor0hcb9p571bp"600
TXT"v=spf1 include:_spf.google.com include:sendgrid.net ip4:74.112.64.20 ip4:74.112.64.28 ip4:174.143.229.153 ip4:174.143.229.145 ip4:174.143.229.159 ip4:74.205.81.137 ip4:174.143.229.152 " " ip4:74.205.81.138 ip4:174.143.229.157 ip4:174.143.229.158 ip4:148.163.135.129 ip4:148.163.139.129 ip4:167.89.85.15 -all "600
TXT"facebook-domain-verification=nk623dmueapht7hpyfpa9pk2gu42j5"600
TXT"_hwrvmr9nz4ruaw9nubrqni5v5vuzsun"600
TXT"google-site-verification=qgqrs9kB2I5-lK5ojr9hHNZPyULps3-2LEyRSgnD03Y"600
TXT"_o665o0rmufjqwbpiy3l4g5wq6fzn4o7"600
TXT"wpe-verification=interconmelb"600
TXT"24a901803aea7f6a91674ef1c86c827a"600
TXT"MS=ms67422158"600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), AAAA (20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 10m; 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