vattenfall.com

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

Registration

info

.com generic · Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA · expires 2027-07-14

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA
Registered
15 July 1996
Last changed
23 September 2026
Expires
14 July 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited
Registry nameservers
ns1.ndc.nuon.com, ns1.vattenfall.de, ns1.vattenfall.se, ns2.ndc.nuon.com, ns2.vattenfall.de, ns2.vattenfall.se
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 2027-07-14 #3
    The registration is valid until 2027-07-14 (264 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.ndc.nuon.com, ns1.vattenfall.de, ns1.vattenfall.se, ns2.ndc.nuon.com, ns2.vattenfall.de, ns2.vattenfall.se

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.ndc.nuon.com, ns1.vattenfall.de, ns1.vattenfall.se, ns2.ndc.nuon.com, ns2.vattenfall.de, ns2.vattenfall.se
NS in the zone
ns1.ndc.nuon.com, ns1.vattenfall.de, ns1.vattenfall.se, ns2.ndc.nuon.com, ns2.vattenfall.de, ns2.vattenfall.se
NameserverAddressesNetwork (AS)Glue
ns1.ndc.nuon.com194.53.167.100AS59543 NUON-AS - Vattenfall N.V., NL194.53.167.100
ns1.vattenfall.de91.192.15.4AS42274 VATTENFALL-AS - Vattenfall Europe Information Services GmbH, DE-
ns1.vattenfall.se151.156.253.254AS205664 VATTENFALL-AB - Vattenfall AB, SE-
ns2.ndc.nuon.com194.53.167.101AS59543 NUON-AS - Vattenfall N.V., NL194.53.167.101
ns2.vattenfall.de91.192.15.5AS42274 VATTENFALL-AS - Vattenfall Europe Information Services GmbH, DE-
ns2.vattenfall.se151.156.253.253AS205664 VATTENFALL-AB - Vattenfall AB, SE-

Checks

  • ✓ 6 nameservers #6
    Delegated to ns1.ndc.nuon.com, ns1.vattenfall.de, ns1.vattenfall.se, ns2.ndc.nuon.com, ns2.vattenfall.de, ns2.vattenfall.se.
  • ✓ 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 3 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS205664 (VATTENFALL-AB - Vattenfall AB, SE): 2 addresses; AS42274 (VATTENFALL-AS - Vattenfall Europe Information Services GmbH, DE): 2 addresses; AS59543 (NUON-AS - Vattenfall N.V., NL): 2 addresses.
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .com, .de, .se.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.ndc.nuon.com 194.53.167.100NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns1.vattenfall.de 91.192.15.4NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns1.vattenfall.se 151.156.253.254NOERROR, 33 ms, authoritativenoyes / yesrefused-
ns2.ndc.nuon.com 194.53.167.101NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns2.vattenfall.de 91.192.15.5NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns2.vattenfall.se 151.156.253.253NOERROR, 29 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 6 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 2024129479 · primary ns1.vattenfall.se

Found

Primary (MNAME)
ns1.vattenfall.se
Contact (RNAME)
hostmaster.vattenfall.com
Serial
2024129479
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.ndc.nuon.com (194.53.167.100)2024129479
ns1.vattenfall.de (91.192.15.4)2024129479
ns1.vattenfall.se (151.156.253.254)2024129479
ns2.ndc.nuon.com (194.53.167.101)2024129479
ns2.vattenfall.de (91.192.15.5)2024129479
ns2.vattenfall.se (151.156.253.253)2024129479

Checks

  • ✓ Serial 2024129479 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.vattenfall.se is one of the listed nameservers.
  • ✓ Contact hostmaster@vattenfall.com #25
    The SOA RNAME hostmaster.vattenfall.com means hostmaster@vattenfall.com.
  • ✓ Timestamp serial #26
    The serial 2024129479 is a Unix timestamp (2034-02-21 10:11 UTC).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
10 iterations, 10-byte salt
Signatures valid until
25 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2090RSASHA256 (8)SHA256 836D64810C569007…yes

DNSKEY in the zone

Key tagRoleAlgorithm
57379ZSK (256)RSASHA256 (8)
48324ZSK (256)RSASHA256 (8)
2090KSK (257)RSASHA256 (8)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 2090 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 97h0m0s and created on demand; the current one was made at 2026-10-21 16:23 UTC and expires at 2026-10-25 16:59 UTC.
  • !
    NSEC3 with extra iterations or salt
    NSEC3 uses 10 iterations and a 10-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.
    #31

Records

info

48 records at the apex

Found

Read from
194.53.167.100:53
TypeValueTTL
SOAns1.vattenfall.se. hostmaster.vattenfall.com. 2024129479 28800 7200 604800 9003600
NSns1.vattenfall.de.3600
NSns2.vattenfall.se.3600
NSns1.ndc.nuon.com.3600
NSns2.ndc.nuon.com.3600
NSns2.vattenfall.de.3600
NSns1.vattenfall.se.3600
A91.192.14.2043600
MX10 mx.vattenfall.com.3600
TXT"d365mktkey=51g596vbjf4mut60ls4qsz2zm"3600
TXT"QuoVadis=2c5ce134-9ae8-49d1-a8fa-06531bd89ef9"3600
TXT"d365mktkey=InIKKC9QTcwfANM0IddbMTjo33hKpjx8s6X0PFIh7pIx"3600
TXT"d365mktkey=FmsCxQfyLZPNDNxBTUFimYs29IAzbYaxDvUojpr0NsMx"3600
TXT"successfactors-site-verification=M2ZiNmFmMjk4ZGQ3MmU0MmMzM2EyZmVjZTgxODM4NzA5YzcxNmEzOTJiYmQwYmFlMGIyOGY3ZDNjODM5NjM0Nw=="3600
TXT"atlassian-sending-domain-verification=c09a88b8-87b5-4af2-9164-edfa033cd24f"3600
TXT"mentimeter-c8e34a00-d0ad-4622-8ab4-fc299a796b5f"3600
TXT"dtm-domain-verification=QUNAEMvbr8Tz3WgOhRJO969qQ_bnRQSzuuqDLrnakq8"3600
TXT"brevo-code:c7c1afeaa71f88b7eeae207d1a8cb5c2"3600
TXT"google-site-verification=DIgKwW5FJSX1YW-U-qltDnT14ObSFL5j0bBLxaBHqcA"3600
TXT"atlassian-domain-verification=tkXmCE7z3zba7vhWL3dviDP8fHRhnY7UaiaDgsupFrNiC10oAy/cUMsHQD15C9q2"3600
TXT"apple-domain-verification=QATPoG8FZf6Pvpxn"3600
TXT"DomainVerification=KDTQW19WG9QLF564TGIWQOZJFC4AU2J6Z39RPYEX4J2EI2I2I4TE9T1H0BBAAACJ"3600
TXT"mindmanager-verification=c582c875d2cb81aad797c78bb2e65f19453b103abb9ac52df4ab3434c502a309"3600
TXT"d365mktkey=AdEp6dOtbs23sLzkkhi7fhWTpkuVE3TE3x6OU7Ccmt8x"3600
TXT"globalsign-domain-verification=AE2D2CCDF8F3976CD21541B9DA4B91E5"3600
TXT"d365mktkey=7wNxd0xg1Zr5PpEYVeKxpK3QTrxDmvg8CnnJmtxlAH0x"3600
TXT"Brevo-code:715109e8db8acdeb1d4d337f6f3f919a"3600
TXT"docker-verification=07e36874-df4d-431c-9feb-26179720759b"3600
TXT"_n8vz2wctszluljr9jw5uc0rapg3fos8"3600
TXT"MV2pOcs8kl/MX9YS/8AoggHrJDzDkwJN+kIrDNrj5rANe6hF4cZ/RxeTwKfRt4NVrKA2tz6ZbqhbAR+Y3qy/lA=="3600
TXT"Cursor-domain-verification-psnwtc=MsA27vTUJAOlc3OLRHC5J7wlO"3600
TXT"adobe-idp-site-verification=c9572883fcd2fc8187d62c2f5c5a3d71137c5fc7b78b50b669009f1589d2a8b6"3600
TXT"atlassian-domain-verification=299iFFR4JzxUUBi5Sh511LDuQwme7t1naphK5Q2Adg5cgwvgPRMHH69MekMcVZjo"3600
TXT"teamviewer-sso-verification=b718d2d0e0524fe49cf66634a1a29b46"3600
TXT"d365mktkey=a028e31l73GgJnQRnxaea1v8e6CmgmSQ3pxFDFmjLxgx"3600
TXT"QuoVadis=6c48dd3a-0389-4ec3-9d88-e39274b7eec8"3600
TXT"d365mktkey=6ipvxjhzhnzasfck4lo3te8qj"3600
TXT"MS=ms37552818"3600
TXT"facebook-domain-verification=2g9ds05vjcbzpp8gqkteisoaxe0p7k"3600
TXT"google-site-verification=_c464Zg8tqo9xn9jE7AUmhlJfIMYby6kSRaGn_JVw6U"3600
TXT"d365mktkey=34znhpnjphm05apzxnlujbb55"3600
TXT"apple-domain-verification=k2bKxpwiidlSRvKC"3600
TXT"v=spf1 ip4:193.122.6.83 ip4:193.122.60.73 include:_spfvfout.vattenfall.com -all"3600
TXT"d365mktkey=2t92xal0lpekz5vr23gutxoo1"3600
TXT"d365mktkey=291k773i593ms8fd8gojtkhe9"3600
TXT"d365mktkey=3oblzzr8qhzb8mch4qd67ly4y"3600
TXT"d365mktkey=7hnzz775u5jok06n5hs1t7e4a"3600
TXT"d365mktkey=1hb6t46s2xg4iq8uxfczoewo8"3600

Checks

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