nbcbayarea.com

Checked 22 October 2026, 10:00 UTC · via 8.8.8.8
!Passed with warnings
20 passed 4 warnings 0 failed 7 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-08-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
3 August 2006
Last changed
2 July 2025
Expires
3 August 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
asia2.akam.net, asia3.akam.net, aus1.akam.net, eur3.akam.net, eur4.akam.net, ns1-102.akam.net, ns1-161.akam.net, use3.akam.net, usw1.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 2027-08-03 #3
    The registration is valid until 2027-08-03 (285 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

asia2.akam.net, asia3.akam.net, aus1.akam.net, eur3.akam.net, eur4.akam.net, ns1-102.akam.net, ns1-161.akam.net, use3.akam.net, usw1.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
asia2.akam.net, asia3.akam.net, aus1.akam.net, eur3.akam.net, eur4.akam.net, ns1-102.akam.net, ns1-161.akam.net, use3.akam.net, usw1.akam.net
NS in the zone
asia2.akam.net, asia3.akam.net, aus1.akam.net, eur3.akam.net, eur4.akam.net, ns1-102.akam.net, ns1-161.akam.net, use3.akam.net, usw1.akam.net
NameserverAddressesNetwork (AS)Glue
asia2.akam.net95.101.36.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
asia3.akam.net23.211.61.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
aus1.akam.net184.85.248.65AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
eur3.akam.net95.100.174.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
eur4.akam.net84.53.139.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns1-102.akam.net193.108.91.102 2600:1401:2::66AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns1-161.akam.net193.108.91.161 2600:1401:2::a1AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
use3.akam.net96.7.49.65AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
usw1.akam.net23.61.199.66AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 9 nameservers #6
    Delegated to asia2.akam.net, asia3.akam.net, aus1.akam.net, eur3.akam.net, eur4.akam.net, ns1-102.akam.net, ns1-161.akam.net, use3.akam.net, usw1.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2600:1401:2::/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 (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 11 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: asia2.akam.net, asia3.akam.net, aus1.akam.net, eur3.akam.net, eur4.akam.net, use3.akam.net, usw1.akam.net.
    #13

Nameservers

warn

11 of 11 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
asia2.akam.net 95.101.36.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
asia3.akam.net 23.211.61.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.32
aus1.akam.net 184.85.248.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
eur3.akam.net 95.100.174.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.29
eur4.akam.net 84.53.139.64NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
ns1-102.akam.net 193.108.91.102NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
ns1-102.akam.net 2600:1401:2::66NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
ns1-161.akam.net 193.108.91.161NOERROR, 7 ms, authoritativenoyes / yesrefused41824.7
ns1-161.akam.net 2600:1401:2::a1NOERROR, 12 ms, authoritativenoyes / yesrefused41824.7
use3.akam.net 96.7.49.65NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
usw1.akam.net 23.61.199.66NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5

Checks

  • ✓ All respond #14
    All 11 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: asia2.akam.net: "48878.29"; asia3.akam.net: "48878.32"; aus1.akam.net: "41824.6"; eur3.akam.net: "48878.29"; eur4.akam.net: "41824.6"; ns1-102.akam.net: "41824.9"; ns1-161.akam.net: "41824.7"; use3.akam.net: "41824.5"; usw1.akam.net: "41824.5". 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 2014091895 · primary ns1.nbcuni.com

Found

Primary (MNAME)
ns1.nbcuni.com
Contact (RNAME)
domain\.admin.nbcuni.com
Serial
2014091895
Refresh / retry
900 s / 3600 s
Expire
2592000 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
asia2.akam.net (95.101.36.64)2014091895
asia3.akam.net (23.211.61.64)2014091895
aus1.akam.net (184.85.248.65)2014091895
eur3.akam.net (95.100.174.64)2014091895
eur4.akam.net (84.53.139.64)2014091895
ns1-102.akam.net (193.108.91.102)2014091895
ns1-102.akam.net (2600:1401:2::66)2014091895
ns1-161.akam.net (193.108.91.161)2014091895
ns1-161.akam.net (2600:1401:2::a1)2014091895
use3.akam.net (96.7.49.65)2014091895
usw1.akam.net (23.61.199.66)2014091895

Checks

  • ✓ Serial 2014091895 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d; retry 1h should be shorter than refresh 15m. Current values: refresh 15m, retry 1h, expire 30d, negative TTL 15m.
    #23
  • i
    Hidden master
    The primary nameserver ns1.nbcuni.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact domain.admin@nbcuni.com #25
    The SOA RNAME domain\.admin.nbcuni.com means domain.admin@nbcuni.com.
  • ✓ Date-based serial #26
    The serial 2014091895 follows the YYYYMMDDnn convention (2014-09-18).

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

18 records at the apex

Found

Read from
95.101.36.64:53
TypeValueTTL
SOAns1.nbcuni.com. domain\.admin.nbcuni.com. 2014091895 900 3600 2592000 90043200
NSns1-102.akam.net.99
NSusw1.akam.net.99
NSns1-161.akam.net.99
NSasia3.akam.net.99
NSuse3.akam.net.99
NSeur3.akam.net.99
NSasia2.akam.net.99
NSaus1.akam.net.99
NSeur4.akam.net.99
A104.101.238.2320
MX20 mx0a-00176a04.pphosted.com.99
MX20 mx0b-00176a04.pphosted.com.99
MX10 mxb-00176a04.gslb.pphosted.com.99
MX10 mxa-00176a04.gslb.pphosted.com.99
TXT"_hga0ebf5gh6x4x97f31lgd1yvoyno1r"99
TXT"MS=ms35877455"99
TXT"v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all"99

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), MX (1m39s), NS (1m39s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1m39s; 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