stratasys.com

Checked 22 October 2026, 10:52 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2029-07-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
8 July 1993
Last changed
10 June 2026
Expires
7 July 2029
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com, ns7.markmonitor.com
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 2029-07-07 #3
    The registration is valid until 2029-07-07 (988 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

ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com, ns7.markmonitor.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com, ns7.markmonitor.com
NS in the zone
ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com, ns7.markmonitor.com
NameserverAddressesNetwork (AS)Glue
ns1.markmonitor.com149.112.160.1 2620:10a:80a8::1AS55195 CIRA-CLOUD1 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA AS55195 CIRA-CLOUD1 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA149.112.160.1 2620:10a:80a8::1
ns2.markmonitor.com176.97.158.1 2001:67c:10b8::1AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT176.97.158.1 2001:67c:10b8::1
ns3.markmonitor.com149.112.161.1 2620:10a:80a9::1AS394354 CIRA-CLOUD2 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA AS394354 CIRA-CLOUD2 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA149.112.161.1 2620:10a:80a9::1
ns4.markmonitor.com192.174.68.1 2001:67c:1bc::1AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT192.174.68.1 2001:67c:1bc::1
ns5.markmonitor.com149.112.160.2 2620:10a:80a8::2AS55195 CIRA-CLOUD1 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA AS55195 CIRA-CLOUD1 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA149.112.160.2 2620:10a:80a8::2
ns6.markmonitor.com176.97.158.3 2001:67c:10b8::3AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT176.97.158.3 2001:67c:10b8::3
ns7.markmonitor.com149.112.161.2 2620:10a:80a9::2AS394354 CIRA-CLOUD2 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA AS394354 CIRA-CLOUD2 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA149.112.161.2 2620:10a:80a9::2

Checks

  • ✓ 7 nameservers #6
    Delegated to ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com, ns7.markmonitor.com.
  • ✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 6 addresses; AS394354 (CIRA-CLOUD2 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA): 4 addresses; AS55195 (CIRA-CLOUD1 - CIRA Canadian Internet Registration Authority Autorit Canadienne pour les enregistrements Internet, CA): 4 addresses.
  • i
    All nameserver names under .com
    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

info

14 of 14 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.markmonitor.com 149.112.160.1NOERROR, 16 ms, authoritativenoyes / yesrefusedCIRA Server
ns1.markmonitor.com 2620:10a:80a8::1NOERROR, 16 ms, authoritativenoyes / yesrefusedCIRA Server
ns2.markmonitor.com 176.97.158.1NOERROR, 12 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns2.markmonitor.com 2001:67c:10b8::1NOERROR, 12 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns3.markmonitor.com 149.112.161.1NOERROR, 3 ms, authoritativenoyes / yesrefusedFRA D-ZONE nameserver
ns3.markmonitor.com 2620:10a:80a9::1NOERROR, 4 ms, authoritativenoyes / yesrefusedCIRA Server
ns4.markmonitor.com 192.174.68.1NOERROR, 5 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns4.markmonitor.com 2001:67c:1bc::1NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns5.markmonitor.com 149.112.160.2NOERROR, 16 ms, authoritativenoyes / yesrefusedLHR D-ZONE nameserver
ns5.markmonitor.com 2620:10a:80a8::2NOERROR, 16 ms, authoritativenoyes / yesrefusedLHR D-ZONE nameserver
ns6.markmonitor.com 176.97.158.3NOERROR, 13 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns6.markmonitor.com 2001:67c:10b8::3NOERROR, 12 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns7.markmonitor.com 149.112.161.2NOERROR, 3 ms, authoritativenoyes / yesrefusedFRA D-ZONE nameserver
ns7.markmonitor.com 2620:10a:80a9::2NOERROR, 4 ms, authoritativenoyes / yesrefusedFRA D-ZONE nameserver

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.markmonitor.com: "CIRA Server"; ns2.markmonitor.com: "RcodeZero DNS"; ns3.markmonitor.com: "FRA D-ZONE nameserver"; ns3.markmonitor.com: "CIRA Server"; ns4.markmonitor.com: "RcodeZero DNS"; ns5.markmonitor.com: "LHR D-ZONE nameserver"; ns6.markmonitor.com: "RcodeZero DNS"; ns7.markmonitor.com: "FRA D-ZONE nameserver".
    #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 2026101802 · primary ns1.markmonitor.com

Found

Primary (MNAME)
ns1.markmonitor.com
Contact (RNAME)
hostmaster.markmonitor.com
Serial
2026101802
Refresh / retry
86400 s / 3600 s
Expire
2592000 s
Negative TTL
172800 s

Serial per nameserver

NameserverSerial
ns1.markmonitor.com (149.112.160.1)2026101802
ns1.markmonitor.com (2620:10a:80a8::1)2026101802
ns2.markmonitor.com (176.97.158.1)2026101802
ns2.markmonitor.com (2001:67c:10b8::1)2026101802
ns3.markmonitor.com (149.112.161.1)2026101802
ns3.markmonitor.com (2620:10a:80a9::1)2026101802
ns4.markmonitor.com (192.174.68.1)2026101802
ns4.markmonitor.com (2001:67c:1bc::1)2026101802
ns5.markmonitor.com (149.112.160.2)2026101802
ns5.markmonitor.com (2620:10a:80a8::2)2026101802
ns6.markmonitor.com (176.97.158.3)2026101802
ns6.markmonitor.com (2001:67c:10b8::3)2026101802
ns7.markmonitor.com (149.112.161.2)2026101802
ns7.markmonitor.com (2620:10a:80a9::2)2026101802

Checks

  • ✓ Serial 2026101802 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 1h, expire 30d, negative TTL 2d.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.markmonitor.com is one of the listed nameservers.
  • ✓ Contact hostmaster@markmonitor.com #25
    The SOA RNAME hostmaster.markmonitor.com means hostmaster@markmonitor.com.
  • ✓ Date-based serial #26
    The serial 2026101802 follows the YYYYMMDDnn convention (2026-10-18).

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

info

57 records at the apex

Found

Read from
149.112.160.1:53
TypeValueTTL
SOAns1.markmonitor.com. hostmaster.markmonitor.com. 2026101802 86400 3600 2592000 17280086400
NSns1.markmonitor.com.86400
NSns2.markmonitor.com.86400
NSns3.markmonitor.com.86400
NSns4.markmonitor.com.86400
NSns5.markmonitor.com.86400
NSns6.markmonitor.com.86400
NSns7.markmonitor.com.86400
A35.166.58.5186400
MX10 stratasys-com.mail.protection.outlook.com.86400
TXT"_9050tja71ny9l8fwu2ht0krfa6m4ltt"86400
TXT"_00j5dwuskwl3j8rpmsl1la7ohywow3c"86400
TXT"ciscocidomainverification=1346e18bcfb5b66c3fdcf94be72f128f614d8c538193c84c4bbe212ecd3945a3"86400
TXT"00d0y000001l1bruaa"86400
TXT"5k7ndjqzkxjg46zgpxs5ymlhlmylym8b"86400
TXT"apple-domain-verification=xbFjfRao2pdRiHVn"86400
TXT"4yxfmn58lyj621p19gyrgd50j6sv1y0z"86400
TXT"google-site-verification=5S4K7rrw5ridNAvLjGi40kOEzSQKXxx70lOLCpiTTY4"86400
TXT"dpvttc49djjp9759jbpds1jx565c3msv"86400
TXT"site. google-site-verification=CBFk1TfC-tj_6pEu8_Kgdj-KN8T8a5w2sWUFNsh6AfA"86400
TXT"pgc6fywgyjzqcq92yxvx4zrrp4y6bt76"86400
TXT"5r18lpkg6zxhqkc12m47ymd6v4xtd5yk"86400
TXT"bf0ml0xjk1wvnhc962clv3pwzdzggx10"86400
TXT"nlyyh0mrt922h6c4bhtjg7nr4jgnshrd"86400
TXT"atlassian-domain-verification=1QQdB6Enyn81sGtqvxMl7DBEDQn08CLQf4cC1y7OaPPeeWGk9FodLKLd/IS2x566"86400
TXT"gkOTGxUCYLEGWUEAOge0l7XidvB6omm+xMZri13jGHsFQw7/4oV5COOhkJlD08hgitgr5M79zKZmF0W/HtbRHw=="86400
TXT"successfactors-site-verification=OGMyNzhmN2JjNDhmN2Y5MDJlZjM2NGRiMThmZDVhNmYxNGQzYTc4ZjEzNWM3ZDQ0ODVlNTQ4YmY4MTJjOGQwZQ=="86400
TXT"00D0Y000001l1br=1TBQD00000003SX"86400
TXT"_74cgvshrdv6t969qh5yy4guncy9grkb"86400
TXT"7pjb3hjvp3d4v5bftk37fhcwq621fcpc"86400
TXT"google-site-verification=BlkAsCPk6GMOj1nYlJeB2S_YcVISg0y68wgDy0lbNvU"86400
TXT"webexdomainverification.4C675B8B1754B136E053AB06FC0A3F65=c69b2cb0-e042-481e-867d-7638f893fa24"86400
TXT"google-site-verification=rqUdtf-NwtjQEIR6DlsrKImFrjaiO8JaXa36OtxHU3Y"86400
TXT"_izzhr1bzokvhipw43itjujgn4j0hfj8"86400
TXT"anthropic-domain-verification-321xph=CidJ7i8AHuBP1VfJhbryAdxvO"86400
TXT"google-site-verification=bHpMVsWYhnokAadETm7vJbM1SuZvTNGovoP8vMh1QEg"86400
TXT"_n72osu2e59pns4lvps6syw2mwb1i65o"86400
TXT"_spf-dc4.sapsf.com"86400
TXT"_2wlygzaf6t5x8kmnrc8io1kqi29tdjb"86400
TXT"_1o2rtltie9pngdb1t224bv89lhe0aob"86400
TXT"apple-domain-verification=tmm3x8Yp1WB14ZNO"86400
TXT"_t9i5fdob50ejn3v9gflrv77deq3omcv"86400
TXT"teamviewer-sso-verification=45c2f28a2c6d4542bca958a5a7aca170"86400
TXT"facebook-domain-verification=9p2ldc52m0vxi6ebh3xyzat9zzbrrm"86400
TXT"t3w433q63qq72bmzcbp4kyhbtjdxy6sy"86400
TXT"google-site-verification=qiD5l2xK-IhVP7wdy5tMVPg_8qXgg2SQbJaiks53VHg"86400
TXT"knowbe4-site-verification=d58ceba6173f1f6d010b1d16a5a046ab"86400
TXT"lzpx0dj2sf1mthcv5bv82f414z9p8qhy"86400
TXT"openai-domain-verification=dv-qP1d5nyTl6bsOv9YacJvzknP"86400
TXT"facebook-domain-verification=42htok56udg33ku38kkub2hirhd2bg"86400
TXT"amazonses:ySaKYuVtTkV9iiCEEVjdKs5hragzyfWdk0QCaE/mUw0="86400
TXT"v=spf1 ip4:66.70.98.201/30 ip4:148.66.249.37 ip4:70.42.227.151 ip4:70.42.227.152" " include:spf.protection.outlook.com include:_spf.salesforce.com include:successf" "actors.eu include:mktomail.com include:sendgrid.net include:_spf-dc4.sapsf.com i" "nclude:eu.rp.oracleemaildelivery.com include:_spf-dc4.sapsf.com include:spf.crse" "nd.com -all"86400
TXT"_f717s7exl1oci16d87cz5uf0pmqobj7"86400
TXT"google-site-verification=oZlahf9pnTgqMdv_Vp64jp5WfwYGpZApJpvBOqjnYgE"86400
TXT"hYbT+S/MldMvdtQK9tD+Ow+0myctGqkmGcS2r6z3BmHuZInAq72yGWgxtaCugOQrv1ONwdKQvNw1edBeGTdANQ=="86400
TXT"atlassian-domain-verification=r61RiqtcdD7ubKlE986lEfcPa5AMRR3VrthgEOuFaayAjr7TyLDqeqHdIC65bVST"86400
TXT"adobe-idp-site-verification=a54a1afed95e1d1769e44eaa74b54237ec697f8a3a585bbd8df7e507e7d34338"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 1d, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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.
  • 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