janssen.com

Checked 22 October 2026, 09:23 UTC · via 8.8.8.8
!Passed with warnings
24 passed 4 warnings 0 failed 3 info

Registration

info

.com generic · Key-Systems GmbH · expires 2027-11-06

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Key-Systems GmbH
Registered
7 November 1995
Last changed
5 October 2026
Expires
6 November 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net, ns01.jnjdns.com, ns02.jnjdns.com, ns03.jnjdns.com, ns04.jnjdns.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 2027-11-06 #3
    The registration is valid until 2027-11-06 (379 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

dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net, ns01.jnjdns.com, ns02.jnjdns.com, ns03.jnjdns.com, ns04.jnjdns.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net, ns01.jnjdns.com, ns02.jnjdns.com, ns03.jnjdns.com, ns04.jnjdns.com
NS in the zone
dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net, ns01.jnjdns.com, ns02.jnjdns.com, ns03.jnjdns.com, ns04.jnjdns.com
NameserverAddressesNetwork (AS)Glue
dns1.p01.nsone.net198.51.44.1 2620:4d:4000:6259:7:1:0:1AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns2.p01.nsone.net198.51.45.1 2a00:edc0:6259:7:1::2AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns3.p01.nsone.net198.51.44.65 2620:4d:4000:6259:7:1:0:3AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns4.p01.nsone.net198.51.45.65 2a00:edc0:6259:7:1::4AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
ns01.jnjdns.com45.54.33.1 2607:f740:e659::1AS63911 NETACTUATE-AS-AP - NetActuate, Inc, US AS63911 NETACTUATE-AS-AP - NetActuate, Inc, US45.54.33.1
ns02.jnjdns.com45.54.33.65 2607:f740:e659:4::1AS63911 NETACTUATE-AS-AP - NetActuate, Inc, US AS63911 NETACTUATE-AS-AP - NetActuate, Inc, US45.54.33.65
ns03.jnjdns.com45.54.33.129 2607:f740:e659:8::1AS63911 NETACTUATE-AS-AP - NetActuate, Inc, US AS63911 NETACTUATE-AS-AP - NetActuate, Inc, US45.54.33.129
ns04.jnjdns.com45.54.33.193 2607:f740:e659:c::1AS63911 NETACTUATE-AS-AP - NetActuate, Inc, US AS63911 NETACTUATE-AS-AP - NetActuate, Inc, US45.54.33.193

Checks

  • ✓ 8 nameservers #6
    Delegated to dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net, ns01.jnjdns.com, ns02.jnjdns.com, ns03.jnjdns.com, ns04.jnjdns.com.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns01.jnjdns.com (glue 45.54.33.1, zone 45.54.33.1, 2607:f740:e659::1); ns02.jnjdns.com (glue 45.54.33.65, zone 45.54.33.65, 2607:f740:e659:4::1); ns03.jnjdns.com (glue 45.54.33.129, zone 45.54.33.129, 2607:f740:e659:8::1); ns04.jnjdns.com (glue 45.54.33.193, zone 45.54.33.193, 2607:f740:e659:c::1). Update the glue at your registrar.
    #8
  • ✓ 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 3 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS62597 (NSONE - NSONE Inc, US): 8 addresses; AS63911 (NETACTUATE-AS-AP - NetActuate, Inc, US): 8 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.p01.nsone.net 198.51.44.1NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns1.p01.nsone.net 2620:4d:4000:6259:7:1:0:1NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns2.p01.nsone.net 198.51.45.1NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns2.p01.nsone.net 2a00:edc0:6259:7:1::2NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns3.p01.nsone.net 198.51.44.65NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns3.p01.nsone.net 2620:4d:4000:6259:7:1:0:3NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns4.p01.nsone.net 198.51.45.65NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns4.p01.nsone.net 2a00:edc0:6259:7:1::4NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns01.jnjdns.com 45.54.33.1NOERROR, 9 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns01.jnjdns.com 2607:f740:e659::1NOERROR, 10 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns02.jnjdns.com 45.54.33.65NOERROR, 9 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns02.jnjdns.com 2607:f740:e659:4::1NOERROR, 9 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns03.jnjdns.com 45.54.33.129NOERROR, 9 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns03.jnjdns.com 2607:f740:e659:8::1NOERROR, 10 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns04.jnjdns.com 45.54.33.193NOERROR, 9 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns04.jnjdns.com 2607:f740:e659:c::1NOERROR, 10 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9

Checks

  • ✓ All respond #14
    All 16 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: dns1.p01.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; dns2.p01.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; dns3.p01.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; dns4.p01.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; ns01.jnjdns.com: "19dd46e347df36b70933bf2be8023258586586a9"; ns02.jnjdns.com: "19dd46e347df36b70933bf2be8023258586586a9"; ns03.jnjdns.com: "19dd46e347df36b70933bf2be8023258586586a9"; ns04.jnjdns.com: "19dd46e347df36b70933bf2be8023258586586a9".
    #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 1718123722 · primary dns1.p01.nsone.net

Found

Primary (MNAME)
dns1.p01.nsone.net
Contact (RNAME)
hostmaster.nsone.net
Serial
1718123722
Refresh / retry
7200 s / 7200 s
Expire
2592000 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
dns1.p01.nsone.net (198.51.44.1)1718123722
dns1.p01.nsone.net (2620:4d:4000:6259:7:1:0:1)1718123722
dns2.p01.nsone.net (198.51.45.1)1718123722
dns2.p01.nsone.net (2a00:edc0:6259:7:1::2)1718123722
dns3.p01.nsone.net (198.51.44.65)1718123722
dns3.p01.nsone.net (2620:4d:4000:6259:7:1:0:3)1718123722
dns4.p01.nsone.net (198.51.45.65)1718123722
dns4.p01.nsone.net (2a00:edc0:6259:7:1::4)1718123722
ns01.jnjdns.com (45.54.33.1)1718123722
ns01.jnjdns.com (2607:f740:e659::1)1718123722
ns02.jnjdns.com (45.54.33.65)1718123722
ns02.jnjdns.com (2607:f740:e659:4::1)1718123722
ns03.jnjdns.com (45.54.33.129)1718123722
ns03.jnjdns.com (2607:f740:e659:8::1)1718123722
ns04.jnjdns.com (45.54.33.193)1718123722
ns04.jnjdns.com (2607:f740:e659:c::1)1718123722

Checks

  • ✓ Serial 1718123722 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 2h should be shorter than refresh 2h. Current values: refresh 2h, retry 2h, expire 30d, negative TTL 30m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.p01.nsone.net is one of the listed nameservers.
  • ✓ Contact hostmaster@nsone.net #25
    The SOA RNAME hostmaster.nsone.net means hostmaster@nsone.net.
  • ✓ Timestamp serial #26
    The serial 1718123722 is a Unix timestamp (2024-06-11 16:35 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

warn

17 records at the apex

Found

Read from
198.51.44.1:53
TypeValueTTL
SOAdns1.p01.nsone.net. hostmaster.nsone.net. 1718123722 7200 7200 2592000 18001800
NSdns1.p01.nsone.net.3600
NSdns2.p01.nsone.net.3600
NSdns3.p01.nsone.net.3600
NSdns4.p01.nsone.net.3600
NSns01.jnjdns.com.3600
NSns02.jnjdns.com.3600
NSns03.jnjdns.com.3600
NSns04.jnjdns.com.3600
A104.18.42.210249
A172.64.145.46249
AAAA2606:4700:4405::ac40:912e249
AAAA2a06:98c1:3107::6812:2ad2249
MX5 mx1.jnj-sd.iphmx.com.1800
MX5 mx2.jnj-sd.iphmx.com.1800
TXT"MS=ms75980115"1800
TXT"v=spf1 include:_u.janssen.com._spf.smart.ondmarc.com -all"1800

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (4m9s), AAAA (4m9s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1h; 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