Domain report: sonntagsblatt.de

Registration

info

.de country-code

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.
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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

warn

dns1.csaonline.de, dns2.csaonline.de

Nameserver	Addresses	Network (AS)	Glue
dns1.csaonline.de	185.132.35.160	AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB	185.132.35.160
dns2.csaonline.de	185.132.34.160	AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB	185.132.34.160

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2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns1.csaonline.de, dns2.csaonline.de.

#6
✓ 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 2 IPv4 /24s and 0 IPv6 /48s.
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All nameservers in one AS

All nameserver addresses are announced by one network operator (AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 2 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
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All nameserver names under .de

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
!

No IPv6

None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.

#13

info

2 of 2 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns1.csaonline.de 185.132.35.160	NOERROR, 3 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
dns2.csaonline.de 185.132.34.160	NOERROR, 3 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/

✓ All respond #14

All 2 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.
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Identifying string disclosed

These nameservers answer version queries with a string that is not a version number: dns1.csaonline.de: "Served by PowerDNS - https://www.powerdns.com/"; dns2.csaonline.de: "Served by PowerDNS - https://www.powerdns.com/".

#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.

warn

serial 2025050903 · primary dns1.csaonline.de

Nameserver	Serial
dns1.csaonline.de (185.132.35.160)	2025050903
dns2.csaonline.de (185.132.34.160)	2025050903

✓ Serial 2025050903 everywhere #22

All nameservers serve the same version of the zone.
!

Unusual SOA timers

negative caching TTL (minimum) 1m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 3h, retry 1h, expire 7d, negative TTL 1m.

#23
✓ Primary is a public nameserver #24

The primary nameserver dns1.csaonline.de is one of the listed nameservers.
✓ Contact rz@csaonline.de #25

The SOA RNAME rz.csaonline.de means rz@csaonline.de.
✓ Date-based serial #26

The serial 2025050903 follows the YYYYMMDDnn convention (2025-05-09).

warn

Signed, but no DS at parent

Key tag	Role	Algorithm
42570	ZSK (256)	RSASHA256 (8)
48985	KSK (257)	RSASHA256 (8)

!

Signed but not delegated securely

The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.

#27
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-15 #30

The earliest DNSKEY/SOA signature expires at 2026-11-15 13:12 UTC.
!

NSEC3 with extra iterations or salt

NSEC3 uses 10 iterations and a 8-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

info

8 records at the apex

Type	Value	TTL
SOA	dns1.csaonline.de. rz.csaonline.de. 2025050903 10800 3600 604800 60	86400
NS	dns2.csaonline.de.	3600
NS	dns1.csaonline.de.	3600
A	157.97.45.55	3600
MX	20 mailx3-in-b.csaonline.de.	3600
MX	10 mailx3-in-a.csaonline.de.	3600
TXT	"google-site-verification=C2bek3MAoR0Inr06afTQLKNAJZt4RvcsonFAMRQqkgU"	3600
TXT	"v=spf1 ip4:93.180.157.107 ip4:92.204.239.114/32 ip4:35.246.162.71/32 ip4:82.165.72.137 include:spf.crsend.com include:_spf.csaonline.de a mx ~all"	3600

✓ 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.
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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