ptc.com

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

Registration

info

.com generic · Key-Systems GmbH · expires 2028-12-08

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Key-Systems GmbH
Registered
9 December 1993
Last changed
12 May 2026
Expires
8 December 2028
Status
client delete prohibited, client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
a1-247.akam.net, a10-67.akam.net, a12-66.akam.net, a2-65.akam.net, a5-67.akam.net, a9-65.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 2028-12-08 #3
    The registration is valid until 2028-12-08 (777 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer 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

a1-247.akam.net, a10-67.akam.net, a12-66.akam.net, a2-65.akam.net, a5-67.akam.net, a9-65.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-247.akam.net, a10-67.akam.net, a12-66.akam.net, a2-65.akam.net, a5-67.akam.net, a9-65.akam.net
NS in the zone
a1-247.akam.net, a10-67.akam.net, a12-66.akam.net, a2-65.akam.net, a5-67.akam.net, a9-65.akam.net
NameserverAddressesNetwork (AS)Glue
a1-247.akam.net193.108.91.247 2600:1401:2::f7AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a10-67.akam.net96.7.50.67 2600:1480:d000::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a12-66.akam.net184.26.160.66 2600:1480:f000::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a2-65.akam.net95.100.174.65 2600:1480:7000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a5-67.akam.net95.100.168.67 2600:1480:b000::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-65.akam.net184.85.248.65 2a02:26f0:117::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-247.akam.net, a10-67.akam.net, a12-66.akam.net, a2-65.akam.net, a5-67.akam.net, a9-65.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
a1-247.akam.net 193.108.91.247NOERROR, 7 ms, authoritativenoyes / yesrefused41824.8
a1-247.akam.net 2600:1401:2::f7NOERROR, 7 ms, authoritativenoyes / yesrefused41824.5
a10-67.akam.net 96.7.50.67NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a10-67.akam.net 2600:1480:d000::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.30
a12-66.akam.net 184.26.160.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.30
a12-66.akam.net 2600:1480:f000::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a2-65.akam.net 95.100.174.65NOERROR, 5 ms, authoritativenoyes / yesrefused48878.26
a2-65.akam.net 2600:1480:7000::41NOERROR, 6 ms, authoritativenoyes / yesrefused48878.31
a5-67.akam.net 95.100.168.67NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
a5-67.akam.net 2600:1480:b000::43NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
a9-65.akam.net 184.85.248.65NOERROR, 5 ms, authoritativenoyes / yesrefused41824.6
a9-65.akam.net 2a02:26f0:117::41NOERROR, 5 ms, authoritativenoyes / yesrefused41824.9

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: a1-247.akam.net: "41824.8"; a1-247.akam.net: "41824.5"; a10-67.akam.net: "48878.33"; a10-67.akam.net: "48878.30"; a12-66.akam.net: "48878.30"; a12-66.akam.net: "48878.26"; a2-65.akam.net: "48878.26"; a2-65.akam.net: "48878.31"; a5-67.akam.net: "41824.7"; a5-67.akam.net: "41824.11"; a9-65.akam.net: "41824.6"; a9-65.akam.net: "41824.9". 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 2009035741 · primary dns.ptc.com

Found

Primary (MNAME)
dns.ptc.com
Contact (RNAME)
please_set_email.absolutely.nowhere
Serial
2009035741
Refresh / retry
3600 s / 3600 s
Expire
2592000 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
a1-247.akam.net (193.108.91.247)2009035741
a1-247.akam.net (2600:1401:2::f7)2009035741
a10-67.akam.net (96.7.50.67)2009035741
a10-67.akam.net (2600:1480:d000::43)2009035741
a12-66.akam.net (184.26.160.66)2009035741
a12-66.akam.net (2600:1480:f000::42)2009035741
a2-65.akam.net (95.100.174.65)2009035741
a2-65.akam.net (2600:1480:7000::41)2009035741
a5-67.akam.net (95.100.168.67)2009035741
a5-67.akam.net (2600:1480:b000::43)2009035741
a9-65.akam.net (184.85.248.65)2009035741
a9-65.akam.net (2a02:26f0:117::41)2009035741

Checks

  • ✓ Serial 2009035741 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 30d, negative TTL 15m.
    #23
  • i
    Hidden master
    The primary nameserver dns.ptc.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 please_set_email@absolutely.nowhere #25
    The SOA RNAME please_set_email.absolutely.nowhere means please_set_email@absolutely.nowhere.
  • ✓ Timestamp serial #26
    The serial 2009035741 is a Unix timestamp (2033-08-30 17:29 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

pass

85 records at the apex

Found

Read from
193.108.91.247:53
TypeValueTTL
SOAdns.ptc.com. please_set_email.absolutely.nowhere. 2009035741 3600 3600 2592000 900900
NSa2-65.akam.net.900
NSa12-66.akam.net.900
NSa1-247.akam.net.900
NSa5-67.akam.net.900
NSa9-65.akam.net.900
NSa10-67.akam.net.900
A40.117.169.225900
MX50 ptc-com.mail.protection.outlook.com.300
TXT"atlassian-domain-verification=gMx623LP5CzTCv0OidJvhtWO6yuQuz/KXmeKEgOmsGZVqH1x3vyjxYGVjrsrrcnH"900
TXT"ZOOM_verify_9QPB33cZQli2cpbtRLnZ3g"900
TXT"ibmid=79e79ef6-61a9-4ee2-a2da-fa431c6fbb55"900
TXT"oci-domain-verification=jlA7em6NTLZ8lg0rWL48ltXNi0M72ma1inXor63DNS"900
TXT"atlassian-domain-verification=0sxSLvulymJSftWUjLYW7BpgwKItZareavDlcLxMWKF5GjGGL3TSTOXZ/67PQGmC"900
TXT"cursor-domain-verification-bjr808=77IkAU0b4eb7ch81bO9LLDbOD"900
TXT"ddg2x30pnd77rtyhztpnbmlpqfrlb5fd"900
TXT"wiz-domain-verification=1eb85fa5d4ba983d357c2672f8d096c873daec6077b91b7db379cfcec1dfb5f5"900
TXT"reachdesk-verification=0KDaJWonfORj2Jo7qlIdmnouIs7VYzkfel2y61Nxh863sI111wJuMj1YLyZFBz0p"900
TXT"anthropic-domain-verification-2ft5xr=FX9aWN7gXolhaupUoFVrJYbTO"900
TXT"mongodb-site-verification=GW2OmKNAinS7p7QIHApXc70AFwEyKXG4"900
TXT"<03.04.2025>"900
TXT"atlassian-domain-verification=atlassian-domain-verification=+ZnoyVUo/wNFswVuIDexbDsi6ua1IjTNep+pIZKKS5KMqGQ1LaEVOz/sQgMoNHgv"900
TXT"mpx7vjrlqh0rk772rhph0wh00q2swt2n"900
TXT"globalsign-domain-verification=B890F8AD1EC4721C658FEBB23E3133C6"900
TXT"globalsign-domain-verification=20E7E1DCC2151FFC1EF466C55445DF0E"900
TXT"_sz9hr49e42kfb6aznugt0fh321s48s0"900
TXT"O+716fz6zH7PhR6xPWbS1cugbKIHg3F8aW7OVXmxij6WX8xNxtvTtAztRfqUFjwjPbyaIcpEW3eo20+sEXM0zA=="900
TXT"jamf-site-verification=3_ok0q7pDZn8I-8Gpi_DlQ"900
TXT"webexdomainverification.4C675B8ACADAB136E053AB06FC0A3F65=61d660e0-517d-49f1-a27d-aa953bd52ef3"900
TXT"northpass-domain-verification=1868b232f0e7d65e8552472b993be781"900
TXT"cb6efe28-eb5a-4dfd-971b-303db4683d6e"900
TXT"atlassian-domain-verification=B2z8aRWMPrJwpmQM3TyHzH/b/a/xZxY/x6Tt5UHePnAwt5FAVe8jiJFSsCakpjjt"900
TXT"ps-cd-verification=a769dde2-8e74-473b-a741-bd46359d056a"900
TXT"globalsign-domain-verification=9bb072651054b80d6cd0fd83ab727670"900
TXT"identrust_validate=EQ87kzb2pRKha+dBQCTLWnXBZuCF353+8PphkqlXhqFI"900
TXT"google-site-verification=NnNrVC9Ghb4A0tUP21Iw-zgnLZ3NirVhqSUTnVpDiSE"900
TXT"duo_sso_verification=tdRqnBRusRvv8yFqvZwE0LTdYvNey81JIpif24igiRUiLuMCVTrqa08GApWCeiQc"900
TXT"atlassian-domain-verification=ogBnepUpkAfZap04BhaIlXhdypVsJoYcaD/BBCUM6Vd8aVKqKkgO0O6/XdEIzioa"900
TXT"cisco-ci-domain-verification=39cc8d35c3f55a4a83fd3e1cf81a1a83b85722c219798c6014e2288fc3e09b62"900
TXT"announcekit-verify=6du1tf1wzeU2f4s6BGlVan4niUdYV7"900
TXT"QuoVadis=01a4114c-2ce5-4ce8-a534-0b557b379c6a"900
TXT"intersight=4dc12157293573cfcfda6f3c1a8fc219832a86c13ec6a16ffacc186090572391"900
TXT"miro-verification=d370a08d65cf415cca4b8e9663f7818953dda846"900
TXT"MS=ms20499661"900
TXT"infoblox-domain-mastery=08563ec51ce9966f2ce965267b4f158c03c30e513d93d445ff94062326498cca66"900
TXT"google-site-verification=D9TM-DtJV-QYP-Z03Q0QMIWP1gX5-A7WcJnhj79MyQU"900
TXT"google-site-verification=yPAx4bpJd7uQpDVibLPcLdL34mTw7K7wbPQIboIpbYo"900
TXT"globalsign-domain-verification=7d369375921068ffca38064d9c7d5c43"900
TXT"_b79svgdzkyepbpl3z8t83v9r53v216d"900
TXT"postman-domain-verification=d043b06bdaba7fdefb3cac0e490cd396058e53d1ebe664c500a7072ff97fdfe5d6152b3de10bd3d4b67e1cd4e8e3dd2bb7e0e7e8ad36bc02134900f01d10fd6f"900
TXT"_63bsrx20p4ay02ch9sooou4srq2f483"900
TXT"globalsign-domain-verification=48bdb914c3793073e8dd0c7339f91d09"900
TXT"intersight=129bddcc7259df87a43e1bb4f70512ca0698f74e8b009263d71bcbc9653b9f88"900
TXT"_30jd1q6we65eg3ibe2dfkpzesjcs8pg"900
TXT"matillion:ptc-com-saml"900
TXT"v=spf1 ip4:54.79.0.4 ip4:52.16.38.44 ip4:52.16.49.62 ip4:132.68.32.25 ip4:52.16.75.109 ip4:52.16.75.118 ip4:52.22.249.69 ip4:18.197.43.76 ip4:168.245.44.103 ip4:54.86.48.119 include:_spf0000000.ptc.com -all"900
TXT"onetrust-domain-verification=9a4dfa79cf524f9bb8a5f4a83bdf149f"900
TXT"onetrust-domain-verification=9a4dfa79cf524f9bb8a5f4a83bdf149"900
TXT"status-page-domain-verification=klpcpq7lzy88"900
TXT"0b26afca-948d-DocuSign-4ab3-beb8-0ffd47d8eb7b"900
TXT"vyj205pnrhx879b26swq98vvxz9n572s"900
TXT"value" "=" "globalsign-domain-verification=20E7E1DCC2151FFC1EF466C55445DF0E"900
TXT"identrust_validate=AGX/uUNQu4pgx5NSEghrdzNv6RUxNK91/CRC6dZtQA0T"900
TXT"apple-domain-verification=P6l6TKmBTWhGwPmK"900
TXT"stripe-verification=9981f79781ed00ee04e165fc7ddb25c5191c368297d01d1f54d0742bb5302621"900
TXT"_wm4fcjxi89tfvd2ibzphl5y32p9xbrm"900
TXT"0m8vbcjz88gc5j2t8h2v5nxly9p1wtfx"900
TXT"globalsign-domain-verification=5B008804BBF2B6C0619D432FC692655A"900
CAA128 issuewild "quovadisglobal.com"900
CAA128 issue "pki.goog; cansignhttpexchanges=yes"900
CAA128 issue "sectigo.com"900
CAA128 issue "digicert.com"900
CAA128 issue "globalsign.com"900
CAA128 issuewild "letsencrypt.org"900
CAA128 issue "ssl.com"900
CAA128 issuewild "digicert.com"900
CAA128 issue "letsencrypt.org"900
CAA128 issuewild "globalsign.com"900
CAA128 issue "amazon.com"900
CAA128 issuewild "identrust.com"900
CAA128 issue "quovadisglobal.com"900
CAA128 issue "identrust.com"900
CAA128 issuewild "pki.goog"900
CAA128 issue "pki.goog"900
CAA128 issuewild "amazon.com"900

Checks

  • ✓ TTLs within range #32
    TTLs: A 15m, MX 5m, NS 15m. The NS TTL at the parent is 2d and in the zone 15m; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: quovadisglobal.com, pki.goog, sectigo.com, digicert.com, globalsign.com, letsencrypt.org, ssl.com, amazon.com, identrust.com.