openssh.com

Checked 22 October 2026, 10:10 UTC · via 8.8.8.8
✗Problems found
23 passed 3 warnings 1 failed 4 info

Registration

fail

.com generic · InterNetX GmbH · expires 2026-10-25

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
InterNetX GmbH
Registered
25 October 1999
Last changed
27 October 2025
Expires
25 October 2026
Status
active
Registry nameservers
a.ns.bsws.de, auth1.ns.gin.ntt.net, b.ns.bsws.de, dns1.openbsd.org
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 in 2 days
    The registration expires on 2026-10-25. Renew it now or enable auto-renewal.
    #3
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

a.ns.bsws.de, auth1.ns.gin.ntt.net, b.ns.bsws.de, dns1.openbsd.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a.ns.bsws.de, auth1.ns.gin.ntt.net, b.ns.bsws.de, dns1.openbsd.org
NS in the zone
a.ns.bsws.de, auth1.ns.gin.ntt.net, auth4.ns.gin.ntt.net, auth5.ns.gin.ntt.net, b.ns.bsws.de, c.ns.bsws.de, dns1.openbsd.org, dns2.openbsd.org, europe1.dnsnode.net, nsp.dnsnode.net
NameserverAddressesNetwork (AS)Glue
a.ns.bsws.de80.86.183.56AS24640 BSWS-AS - BS Web Services GmbH, DE-
auth1.ns.gin.ntt.net129.250.35.229 2001:418:3ff:4::11AS2914 NTT-DATA-2914 - NTT America, Inc., US AS2914 NTT-DATA-2914 - NTT America, Inc., US-
auth4.ns.gin.ntt.net (zone only)213.130.47.21 2001:728:0:7000::201AS2914 NTT-DATA-2914 - NTT America, Inc., US AS2914 NTT-DATA-2914 - NTT America, Inc., US-
auth5.ns.gin.ntt.net (zone only)116.51.22.180 2001:218:4000:9::180AS2914 NTT-DATA-2914 - NTT America, Inc., US AS2914 NTT-DATA-2914 - NTT America, Inc., US-
b.ns.bsws.de80.86.183.57AS24640 BSWS-AS - BS Web Services GmbH, DE-
c.ns.bsws.de (zone only)46.29.43.7AS29394 OEKONET-1 - Toni Mueller trading as oeko.net Toni Mueller IT, DE-
dns1.openbsd.org199.185.230.18AS22512 OPENBSD - OpenBSD, CA-
dns2.openbsd.org (zone only)199.185.230.19AS22512 OPENBSD - OpenBSD, CA-
europe1.dnsnode.net (zone only)194.58.196.32 2a01:3f1:832::53AS8674 NETNOD-IX - Netnod AB, SE AS8674 NETNOD-IX - Netnod AB, SE-
nsp.dnsnode.net (zone only)194.58.198.32 2a01:3f1:3032::53AS56908 NETNOD-NDS - Netnod AB, SE AS56908 NETNOD-NDS - Netnod AB, SE-

Checks

  • ✓ 4 nameservers #6
    Delegated to a.ns.bsws.de, auth1.ns.gin.ntt.net, b.ns.bsws.de, dns1.openbsd.org.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: auth4.ns.gin.ntt.net, auth5.ns.gin.ntt.net, c.ns.bsws.de, dns2.openbsd.org, europe1.dnsnode.net, nsp.dnsnode.net. a.ns.bsws.de, auth1.ns.gin.ntt.net, auth4.ns.gin.ntt.net, auth5.ns.gin.ntt.net, b.ns.bsws.de, c.ns.bsws.de, dns1.openbsd.org, dns2.openbsd.org, europe1.dnsnode.net, nsp.dnsnode.net report NS a.ns.bsws.de auth1.ns.gin.ntt.net auth4.ns.gin.ntt.net auth5.ns.gin.ntt.net b.ns.bsws.de c.ns.bsws.de dns1.openbsd.org dns2.openbsd.org europe1.dnsnode.net nsp.dnsnode.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 8 IPv4 /24s and 5 IPv6 /48s.
  • ✓ 6 autonomous systems #11
    The nameservers are spread over: AS22512 (OPENBSD - OpenBSD, CA): 2 addresses; AS24640 (BSWS-AS - BS Web Services GmbH, DE): 2 addresses; AS2914 (NTT-DATA-2914 - NTT America, Inc., US): 6 addresses; AS29394 (OEKONET-1 - Toni Mueller trading as oeko.net Toni Mueller IT, DE): 1 address; AS56908 (NETNOD-NDS - Netnod AB, SE): 2 addresses; AS8674 (NETNOD-IX - Netnod AB, SE): 2 addresses.
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .de, .net, .org.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: a.ns.bsws.de, b.ns.bsws.de, c.ns.bsws.de, dns1.openbsd.org, dns2.openbsd.org.
    #13

Nameservers

warn

15 of 15 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a.ns.bsws.de 80.86.183.56NOERROR, 12 ms, authoritativenoyes / yesrefused-
auth1.ns.gin.ntt.net 129.250.35.229NOERROR, 126 ms, authoritativenoyes / yesrefused9.11.3-1ubuntu1.19+esm6-Ubuntu
auth1.ns.gin.ntt.net 2001:418:3ff:4::11NOERROR, 126 ms, authoritativenoyes / yesrefused9.11.3-1ubuntu1.19+esm6-Ubuntu
auth4.ns.gin.ntt.net 213.130.47.21NOERROR, 5 ms, authoritativenoyes / yesrefused9.11.3-1ubuntu1.19+esm6-Ubuntu
auth4.ns.gin.ntt.net 2001:728:0:7000::201NOERROR, 4 ms, authoritativenoyes / yesrefused9.11.3-1ubuntu1.19+esm6-Ubuntu
auth5.ns.gin.ntt.net 116.51.22.180NOERROR, 156 ms, authoritativenoyes / yesrefused9.11.3-1ubuntu1.19+esm6-Ubuntu
auth5.ns.gin.ntt.net 2001:218:4000:9::180NOERROR, 157 ms, authoritativenoyes / yesrefused9.11.3-1ubuntu1.19+esm6-Ubuntu
b.ns.bsws.de 80.86.183.57NOERROR, 11 ms, authoritativenoyes / yesrefused-
c.ns.bsws.de 46.29.43.7NOERROR, 4 ms, authoritativenoyes / yesrefused-
dns1.openbsd.org 199.185.230.18NOERROR, 128 ms, authoritativenoyes / yesrefused-
dns2.openbsd.org 199.185.230.19NOERROR, 131 ms, authoritativenoyes / yesrefused-
europe1.dnsnode.net 194.58.196.32NOERROR, 9 ms, authoritativenoyes / yesrefused-
europe1.dnsnode.net 2a01:3f1:832::53NOERROR, 13 ms, authoritativenoyes / yesrefused-
nsp.dnsnode.net 194.58.198.32NOERROR, 9 ms, authoritativenoyes / yesrefused-
nsp.dnsnode.net 2a01:3f1:3032::53NOERROR, 11 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 15 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: auth1.ns.gin.ntt.net: "9.11.3-1ubuntu1.19+esm6-Ubuntu"; auth4.ns.gin.ntt.net: "9.11.3-1ubuntu1.19+esm6-Ubuntu"; auth5.ns.gin.ntt.net: "9.11.3-1ubuntu1.19+esm6-Ubuntu". 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 1218139884 · primary dns1.openbsd.org

Found

Primary (MNAME)
dns1.openbsd.org
Contact (RNAME)
root.openbsd.org
Serial
1218139884
Refresh / retry
14400 s / 900 s
Expire
1814400 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
a.ns.bsws.de (80.86.183.56)1218139884
auth1.ns.gin.ntt.net (129.250.35.229)1218139884
auth1.ns.gin.ntt.net (2001:418:3ff:4::11)1218139884
auth4.ns.gin.ntt.net (213.130.47.21)1218139884
auth4.ns.gin.ntt.net (2001:728:0:7000::201)1218139884
auth5.ns.gin.ntt.net (116.51.22.180)1218139884
auth5.ns.gin.ntt.net (2001:218:4000:9::180)1218139884
b.ns.bsws.de (80.86.183.57)1218139884
c.ns.bsws.de (46.29.43.7)1218139884
dns1.openbsd.org (199.185.230.18)1218139884
dns2.openbsd.org (199.185.230.19)1218139884
europe1.dnsnode.net (194.58.196.32)1218139884
europe1.dnsnode.net (2a01:3f1:832::53)1218139884
nsp.dnsnode.net (194.58.198.32)1218139884
nsp.dnsnode.net (2a01:3f1:3032::53)1218139884

Checks

  • ✓ Serial 1218139884 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 15m, expire 21d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.openbsd.org is one of the listed nameservers.
  • ✓ Contact root@openbsd.org #25
    The SOA RNAME root.openbsd.org means root@openbsd.org.
  • ✓ Timestamp serial #26
    The serial 1218139884 is a Unix timestamp (2008-08-07 20:11 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

info

14 records at the apex

Found

Read from
80.86.183.56:53
TypeValueTTL
SOAdns1.openbsd.org. root.openbsd.org. 1218139884 14400 900 1814400 6003600
NSdns1.openbsd.org.28800
NSdns2.openbsd.org.28800
NSa.ns.bsws.de.28800
NSb.ns.bsws.de.28800
NSc.ns.bsws.de.28800
NSauth1.ns.gin.ntt.net.28800
NSauth4.ns.gin.ntt.net.28800
NSauth5.ns.gin.ntt.net.28800
NSnsp.dnsnode.net.28800
NSeurope1.dnsnode.net.28800
A199.185.178.8028800
AAAA2620:3d:c000:178::8028800
MX5 mail.openbsd.org.28800

Checks

  • ✓ TTLs within range #32
    TTLs: A 8h, AAAA 8h, MX 8h, NS 8h. The NS TTL at the parent is 2d and in the zone 8h; 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