valvesoftware.com

Checked 22 October 2026, 11:20 UTC · via 8.8.8.8
!Passed with warnings
25 passed 4 warnings 0 failed 2 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2028-10-05

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
6 October 1996
Last changed
5 September 2024
Expires
5 October 2028
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
a1-164.akam.net, a11-67.akam.net, a24-64.akam.net, a26-65.akam.net, a8-66.akam.net, a9-67.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 2028-10-05 #3
    The registration is valid until 2028-10-05 (713 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

warn

a1-164.akam.net, a11-67.akam.net, a24-64.akam.net, a26-65.akam.net, a8-66.akam.net, a9-67.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-164.akam.net, a11-67.akam.net, a24-64.akam.net, a26-65.akam.net, a8-66.akam.net, a9-67.akam.net
NS in the zone
a1-194.akam.net, a2-64.akam.net, a22-67.akam.net, a24-64.akam.net, a7-66.akam.net, a9-66.akam.net
NameserverAddressesNetwork (AS)Glue
a1-164.akam.net (parent only)193.108.91.164 2600:1401:2::a4AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a1-194.akam.net (zone only)193.108.91.194 2600:1401:2::c2AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a11-67.akam.net (parent only)84.53.139.67 2600:1480:1::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a2-64.akam.net (zone only)95.100.174.64 2600:1480:7000::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a22-67.akam.net (zone only)23.211.61.67 2600:1480:7800::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a24-64.akam.net2.16.130.64 2600:1480:9800::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a26-65.akam.net (parent only)23.74.25.65 2600:1480:b800::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-66.akam.net (zone only)23.61.199.66 2600:1406:32::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-66.akam.net (parent only)2.16.40.66 2600:1403:a::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-66.akam.net (zone only)184.85.248.66 2a02:26f0:117::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-67.akam.net (parent only)184.85.248.67 2a02:26f0:117::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-164.akam.net, a11-67.akam.net, a24-64.akam.net, a26-65.akam.net, a8-66.akam.net, a9-67.akam.net.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: a1-164.akam.net, a11-67.akam.net, a26-65.akam.net, a8-66.akam.net, a9-67.akam.net; only in the zone: a1-194.akam.net, a2-64.akam.net, a22-67.akam.net, a7-66.akam.net, a9-66.akam.net. a1-164.akam.net, a1-194.akam.net, a11-67.akam.net, a2-64.akam.net, a22-67.akam.net, a24-64.akam.net, a26-65.akam.net, a7-66.akam.net, a8-66.akam.net, a9-66.akam.net, a9-67.akam.net report NS a1-194.akam.net a2-64.akam.net a22-67.akam.net a24-64.akam.net a7-66.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 9 IPv4 /24s and 9 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): 21 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

22 of 22 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-164.akam.net 193.108.91.164NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a1-164.akam.net 2600:1401:2::a4NOERROR, 5 ms, authoritativenoyes / yesrefused41824.10
a1-194.akam.net 193.108.91.194NOERROR, 5 ms, authoritativenoyes / yesrefused41824.11
a1-194.akam.net 2600:1401:2::c2NOERROR, 5 ms, authoritativenoyes / yesrefused41824.8
a11-67.akam.net 84.53.139.67NOERROR, 5 ms, authoritativenoyes / yesrefused41824.4
a11-67.akam.net 2600:1480:1::43NOERROR, 5 ms, authoritativenoyes / yesrefused41824.4
a2-64.akam.net 95.100.174.64NOERROR, 6 ms, authoritativenoyes / yesrefused48878.26
a2-64.akam.net 2600:1480:7000::40NOERROR, 5 ms, authoritativenoyes / yesrefused48878.27
a22-67.akam.net 23.211.61.67NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a22-67.akam.net 2600:1480:7800::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a24-64.akam.net 2.16.130.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a24-64.akam.net 2600:1480:9800::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a26-65.akam.net 23.74.25.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a26-65.akam.net 2600:1480:b800::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a7-66.akam.net 23.61.199.66NOERROR, 6 ms, authoritativenoyes / yesrefused41824.11
a7-66.akam.net 2600:1406:32::42NOERROR, 5 ms, authoritativenoyes / yesrefused41824.9
a8-66.akam.net 2.16.40.66NOERROR, 7 ms, authoritativenoyes / yesrefused48878.30
a8-66.akam.net 2600:1403:a::42NOERROR, 6 ms, authoritativenoyes / yesrefused48878.30
a9-66.akam.net 184.85.248.66NOERROR, 5 ms, authoritativenoyes / yesrefused41824.11
a9-66.akam.net 2a02:26f0:117::42NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a9-67.akam.net 184.85.248.67NOERROR, 6 ms, authoritativenoyes / yesrefused41824.4
a9-67.akam.net 2a02:26f0:117::43NOERROR, 7 ms, authoritativenoyes / yesrefused41824.6

Checks

  • ✓ All respond #14
    All 22 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: a1-164.akam.net: "41824.8"; a1-164.akam.net: "41824.10"; a1-194.akam.net: "41824.11"; a1-194.akam.net: "41824.8"; a11-67.akam.net: "41824.4"; a2-64.akam.net: "48878.26"; a2-64.akam.net: "48878.27"; a22-67.akam.net: "48878.33"; a22-67.akam.net: "48878.31"; a24-64.akam.net: "48878.31"; a24-64.akam.net: "48878.29"; a26-65.akam.net: "48878.31"; a26-65.akam.net: "48878.26"; a7-66.akam.net: "41824.11"; a7-66.akam.net: "41824.9"; a8-66.akam.net: "48878.30"; a9-66.akam.net: "41824.11"; a9-66.akam.net: "41824.9"; a9-67.akam.net: "41824.4"; a9-67.akam.net: "41824.6". 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 2025071693 · primary a1-164.akam.net

Found

Primary (MNAME)
a1-164.akam.net
Contact (RNAME)
admin.valvesoftware.com
Serial
2025071693
Refresh / retry
3600 s / 900 s
Expire
2419200 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
a1-164.akam.net (193.108.91.164)2025071693
a1-164.akam.net (2600:1401:2::a4)2025071693
a1-194.akam.net (193.108.91.194)2025071693
a1-194.akam.net (2600:1401:2::c2)2025071693
a11-67.akam.net (84.53.139.67)2025071693
a11-67.akam.net (2600:1480:1::43)2025071693
a2-64.akam.net (95.100.174.64)2025071693
a2-64.akam.net (2600:1480:7000::40)2025071693
a22-67.akam.net (23.211.61.67)2025071693
a22-67.akam.net (2600:1480:7800::43)2025071693
a24-64.akam.net (2.16.130.64)2025071693
a24-64.akam.net (2600:1480:9800::40)2025071693
a26-65.akam.net (23.74.25.65)2025071693
a26-65.akam.net (2600:1480:b800::41)2025071693
a7-66.akam.net (23.61.199.66)2025071693
a7-66.akam.net (2600:1406:32::42)2025071693
a8-66.akam.net (2.16.40.66)2025071693
a8-66.akam.net (2600:1403:a::42)2025071693
a9-66.akam.net (184.85.248.66)2025071693
a9-66.akam.net (2a02:26f0:117::42)2025071693
a9-67.akam.net (184.85.248.67)2025071693
a9-67.akam.net (2a02:26f0:117::43)2025071693

Checks

  • ✓ Serial 2025071693 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 15m, expire 28d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-164.akam.net is one of the listed nameservers.
  • ✓ Contact admin@valvesoftware.com #25
    The SOA RNAME admin.valvesoftware.com means admin@valvesoftware.com.
  • ✓ Date-based serial #26
    The serial 2025071693 follows the YYYYMMDDnn convention (2025-07-16).

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
193.108.91.164:53
TypeValueTTL
SOAa1-164.akam.net. admin.valvesoftware.com. 2025071693 3600 900 2419200 360010800
NSa2-64.akam.net.172800
NSa24-64.akam.net.172800
NSa9-66.akam.net.172800
NSa1-194.akam.net.172800
NSa22-67.akam.net.172800
NSa7-66.akam.net.172800
A2.16.183.1520
A2.16.183.1920
MX10 us-smtp-inbound-2.mimecast.com.10800
MX10 us-smtp-inbound-1.mimecast.com.10800
TXT"docker-verification=e2a4d858-9744-4422-be23-a5b603b7e2de"10800
TXT"anthropic-domain-verification-n4bk1k=CjnOwh9wVF8YSjEDnzCstWlkp"10800
TXT"atlassian-domain-verification=8W72YZrigWSkrAXgYFb9cvpSo8ydO+mOsn4eGqOaBQvF3dbPdako8DVUoKFreZKO"10800
TXT"CRu0do5v6lYoBQ/nLTsyB2MuSP9fnIzhFmpfJqmjJGNngkOR6QScH2mx4y+joM/S9Up5lFJRFnXMHEaZFuv8Ww=="10800
TXT"ZOOM_verify_6txb0CpTQ16fLBlTpAC9dQ"10800
TXT"v=spf1 mx ip4:72.165.61.134/31 ip4:216.207.205.96/28 ip4:208.64.203.142/31 ip4:208.64.203.180/30 ip4:208.64.202.36/28 ip6:2620:f9:1:1::/64 include:_netblocks.mimecast.com -all"10800
TXT"kgej9AWMUerpL+WGSyI2hN7b4FFcagAzRZvoHfCOMvhG+W+xaff9Smsq7vbPBdDoBh+hiWzkkBSVlgL2l47GgA=="10800
TXT"slack-domain-verification=FUsmkusgwkLtI9MpPclkPJpnWvZeR55LRExH2Aae"10800
TXT"d+KwrMsuiYaHmSsnhrKFxbXoIU3kTRfJDt0M9YFs5wZl9Laidl0bba2ETVT3IizQFX1H5wkX8x3QCqfp7WTkRg=="10800
TXT"h1-domain-verification=2rUfV6GURqrd473467gk3uWkiuVEpcfZBxtwFCZHyAbkfxP5"10800
TXT"jumpdesktop=0b0ccec2ba690a6212b241e8d43524"10800
TXT"MS=ms61951141"10800
TXT"logmein-verification-code=068f4cd3-ee6d-4546-b163-777e0b540571"10800
CAA0 issue "digicert.com"10800
CAA0 iodef "mailto:ssl-abuse@valvesoftware.com"10800
CAA0 issue "letsencrypt.org"10800

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.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: digicert.com, letsencrypt.org.