Domain report: vattenfall.de

Registration

info

.de country-code

Found

TLD: .de (country-code)
ICANN policies apply: no

Checks

i

.de is a country-code TLD (ccTLD)

Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.

#1
✓ TLD delegated and signed #2

.de is delegated in the root zone and DNSSEC-signed.
i

Registration data not available

No registration data via RDAP: the registry of .de offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.

#3

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: de
Delegation from: a.nic.de (194.0.0.53)
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

Nameserver	Addresses	Network (AS)	Glue
ns1.ndc.nuon.com	194.53.167.100	AS59543 NUON-AS - Vattenfall N.V., NL	-
ns1.vattenfall.de	91.192.15.4	AS42274 VATTENFALL-AS - Vattenfall Europe Information Services GmbH, DE	91.192.15.4
ns1.vattenfall.se	151.156.253.254	AS205664 VATTENFALL-AB - Vattenfall AB, SE	-
ns2.ndc.nuon.com	194.53.167.101	AS59543 NUON-AS - Vattenfall N.V., NL	-
ns2.vattenfall.de	91.192.15.5	AS42274 VATTENFALL-AS - Vattenfall Europe Information Services GmbH, DE	91.192.15.5
ns2.vattenfall.se	151.156.253.253	AS205664 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.
✓ Glue present and correct #8

Glue is published for the nameservers inside the zone: ns1.vattenfall.de, ns2.vattenfall.de.
✓ 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

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.ndc.nuon.com 194.53.167.100	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns1.vattenfall.de 91.192.15.4	NOERROR, 13 ms, authoritative	no	yes / yes	refused	-
ns1.vattenfall.se 151.156.253.254	NOERROR, 31 ms, authoritative	no	yes / yes	refused	-
ns2.ndc.nuon.com 194.53.167.101	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns2.vattenfall.de 91.192.15.5	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-
ns2.vattenfall.se 151.156.253.253	NOERROR, 29 ms, authoritative	no	yes / yes	refused	-

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 2024128026 · primary ns1.vattenfall.se

Found

Primary (MNAME): ns1.vattenfall.se
Contact (RNAME): hostmaster.vattenfall.com
Serial: 2024128026
Refresh / retry: 28800 s / 7200 s
Expire: 604800 s
Negative TTL: 900 s

Serial per nameserver

Nameserver	Serial
ns1.ndc.nuon.com (194.53.167.100)	2024128026
ns1.vattenfall.de (91.192.15.4)	2024128026
ns1.vattenfall.se (151.156.253.254)	2024128026
ns2.ndc.nuon.com (194.53.167.101)	2024128026
ns2.vattenfall.de (91.192.15.5)	2024128026
ns2.vattenfall.se (151.156.253.253)	2024128026

Checks

✓ Serial 2024128026 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 2024128026 is a Unix timestamp (2034-02-21 09:47 UTC).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 10 iterations, 14-byte salt
Signatures valid until: 25 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
9065	RSASHA256 (8)	SHA256 3C21D1DB6807F556…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
58414	ZSK (256)	RSASHA256 (8)
9065	KSK (257)	RSASHA256 (8)
26719	ZSK (256)	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 9065 (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 18:08 UTC and expires at 2026-10-25 19:05 UTC.
!

NSEC3 with extra iterations or salt

NSEC3 uses 10 iterations and a 14-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

37 records at the apex

Found

Read from: 194.53.167.100:53

Type	Value	TTL
SOA	ns1.vattenfall.se. hostmaster.vattenfall.com. 2024128026 28800 7200 604800 900	3600
NS	ns2.vattenfall.de.	3600
NS	ns2.vattenfall.se.	3600
NS	ns2.ndc.nuon.com.	3600
NS	ns1.ndc.nuon.com.	3600
NS	ns1.vattenfall.se.	3600
NS	ns1.vattenfall.de.	3600
A	20.76.15.2	3600
MX	10 mx.vattenfall.com.	3600
TXT	"globalsign-domain-verification=F5F0A2E2B0B0979C1843CE57D5B12E35"	3600
TXT	"docker-verification=6b001c34-029b-4e6f-bdf1-44a503e9f2bd"	3600
TXT	"_hfoceelvn1eynuo50bcmsrc3x9ivp0f"	3600
TXT	"_tkwihn6b569zb3j6s0saa275400w2p8"	3600
TXT	"Z14HOk4t6nfunezMwFC/EpiIxZohSmL8ww4DeIm/NCVbOPiIqbDqwU6Hi4czFS4KxzX/37C1Uu53tiSaZglIOQ=="	3600
TXT	"cursor-domain-verification-5jvgje=VcN80ebeKNR3UtfipyLu080JS"	3600
TXT	"d365mktkey=oZ2g2ZmNQjzDK062eWxAIqAi9aOpTu5dxxcTcEIPf8Ax"	3600
TXT	"d365mktkey=2rwx9typ3rcgei78jhlqinqgf"	3600
TXT	"d365mktkey=abc234abc234abc234abc234"	3600
TXT	"MS=A6B4E2C15197086333458379AE8A9415014E2521"	3600
TXT	"MS=ms39385561"	3600
TXT	"_globalsign-domain-verification=CiZDj3Kkhe3yKwDqLe_c6vOPJVpfCRJMuXh3xq3RFq"	3600
TXT	"_globalsign-domain-verification=PIlR4cuxcUUQ3TFUwRHQrikB-mYNepzTkfeH8-52Or"	3600
TXT	"_globalsign-domain-verification=J9ZnaRBGjzDdhPmpmLcoMB9GeMU_X4gF0KypI4kNer"	3600
TXT	"v=spf1 ip4:74.122.253.71 ip4:74.122.253.72 include:_spfvfout.vattenfall.com -all"	3600
TXT	"adobe-idp-site-verification=c9572883fcd2fc8187d62c2f5c5a3d71137c5fc7b78b50b669009f1589d2a8b6"	3600
TXT	"google-site-verification=_tEXgNdAM0AHCmVfhISKXYAdSeKdnuQR4xNOoD2hIkw"	3600
TXT	"d365mktkey=14dnoutycdcakgrntxk3mnv3b"	3600
TXT	"d365mktkey=5dr0dr9v6jyu638fwhbaus8v8"	3600
TXT	"d365mktkey=1nzu2nm1wdee6wt4dzzl1c489"	3600
TXT	"d365mktkey=zerkgn9dc2t80vxtk8ktfidn"	3600
TXT	"pinterest-site-verification=fe82303a8dfa621c1cdc0076648fbc14"	3600
TXT	"atlassian-domain-verification=299iFFR4JzxUUBi5Sh511LDuQwme7t1naphK5Q2Adg5cgwvgPRMHH69MekMcVZjo"	3600
TXT	"_globalsign-domain-verification=2nh-lSY4FfcZsCIkLpUcbU79ZFyJkWfnZUsF1sL3r2"	3600
TXT	"google-site-verification=AauLkRkZONZ33FA8ffTWKDbMM-FjFKiENynHff7lRyI"	3600
TXT	"dtm-domain-verification=iGYYUIVOd6cgXgzJperxgQdX40tOQ2nRHB0G-I0Bk1k"	3600
TXT	"_globalsign-domain-verification=B_aRXHg1w1FwEqey9eyAmvBcpOJq5ld4iO2WNHP3HQ"	3600
TXT	"_globalsign-domain-verification=YUb9Yi0kthZIJD1b9IQXkmWmZ7TAskxClM3NgtrfXW"	3600

Checks

✓ TTLs within range #32

TTLs: A 1h, MX 1h, NS 1h. The NS TTL at the parent is 1d 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