Domain report: drs.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

info

pns.drsintra.de, pns.dtag.de, secondary006.dtag.net

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: pns.drsintra.de, pns.dtag.de, secondary006.dtag.net
NS in the zone: pns.drsintra.de, pns.dtag.de, secondary006.dtag.net

Nameserver	Addresses	Network (AS)	Glue
pns.drsintra.de	194.95.75.230	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	194.95.75.230
pns.dtag.de	194.25.0.125 2003:40:8000::100	AS3320 DTAG - Deutsche Telekom AG, DE AS3320 DTAG - Deutsche Telekom AG, DE	194.25.0.125 2003:40:8000::100
secondary006.dtag.net	195.244.245.25 2a00:fa8:3:0:100:0:6:1	AS5605 NETUSE - NetUSE AG, DE AS5605 NETUSE - NetUSE AG, DE	-

Checks

✓ 3 nameservers #6

Delegated to pns.drsintra.de, pns.dtag.de, secondary006.dtag.net.
✓ 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 2 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS3320 (DTAG - Deutsche Telekom AG, DE): 2 addresses; AS5605 (NETUSE - NetUSE AG, DE): 2 addresses; AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE): 1 address.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .de, .net.
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Partly IPv6

These nameservers have no IPv6 address: pns.drsintra.de.

#13

Nameservers

info

5 of 5 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
pns.drsintra.de 194.95.75.230	NOERROR, 18 ms, authoritative	no	yes / yes	refused	-
pns.dtag.de 194.25.0.125	NOERROR, 9 ms, authoritative	no	yes / yes	refused	DomainNameServer
pns.dtag.de 2003:40:8000::100	NOERROR, 7 ms, authoritative	no	yes / yes	refused	DomainNameServer
secondary006.dtag.net 195.244.245.25	NOERROR, 12 ms, authoritative	no	yes / yes	refused	DomainNameServer
secondary006.dtag.net 2a00:fa8:3:0:100:0:6:1	NOERROR, 17 ms, authoritative	no	yes / yes	refused	DomainNameServer

Checks

✓ All respond #14

All 5 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: pns.dtag.de: "DomainNameServer"; secondary006.dtag.net: "DomainNameServer".

#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 2026083174 · primary pns.drsintra.de

Found

Primary (MNAME): pns.drsintra.de
Contact (RNAME): itt.bo.drs.de
Serial: 2026083174
Refresh / retry: 10800 s / 3600 s
Expire: 1814400 s
Negative TTL: 7200 s

Serial per nameserver

Nameserver	Serial
pns.drsintra.de (194.95.75.230)	2026083174
pns.dtag.de (194.25.0.125)	2026083174
pns.dtag.de (2003:40:8000::100)	2026083174
secondary006.dtag.net (195.244.245.25)	2026083174
secondary006.dtag.net (2a00:fa8:3:0:100:0:6:1)	2026083174

Checks

✓ Serial 2026083174 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 3h, retry 1h, expire 21d, negative TTL 2h.
✓ Primary is a public nameserver #24

The primary nameserver pns.drsintra.de is one of the listed nameservers.
✓ Contact itt@bo.drs.de #25

The SOA RNAME itt.bo.drs.de means itt@bo.drs.de.
✓ Date-based serial #26

The serial 2026083174 follows the YYYYMMDDnn convention (2026-08-31).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 50 iterations, 8-byte salt
Signatures valid until: 23 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
65095	RSASHA256 (8)	SHA256 787703D6458012CD…	yes
65255	RSASHA256 (8)	SHA256 67762D311D3C83C7…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
65255	KSK (257)	RSASHA256 (8)
44805	ZSK (256)	RSASHA256 (8)
46126	KSK (257)	RSASHA256 (8)
65095	KSK (257)	RSASHA256 (8)
346	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 65095 (SHA256), key tag 65255 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
!

Signatures expire soon

The earliest signature expires at 2026-10-23 17:32 UTC (in 43h0m0s). Check that automatic re-signing works.

#30
!

NSEC3 with extra iterations or salt

NSEC3 uses 50 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

Records

info

19 records at the apex

Found

Read from: 194.95.75.230:53

Type	Value	TTL
SOA	pns.drsintra.de. itt.bo.drs.de. 2026083174 10800 3600 1814400 7200	7200
NS	pns.dtag.de.	7200
NS	secondary006.dtag.net.	7200
NS	pns.drsintra.de.	7200
A	167.235.120.132	7200
AAAA	2a01:4f8:1061:172a::2	7200
MX	40 mx12d.antispameurope.com.	7200
MX	20 mx12b.antispameurope.com.	7200
MX	10 mx12a.antispameurope.com.	7200
MX	30 mx12c.antispameurope.com.	7200
TXT	"hpe-greenlake-domain-verification=3139496a71334c6e4776512d5576656863495453795264325837485278576c51"	7200
TXT	"_globalsign-domain-verification=v1v2pbn7jorovj35q5l8t3cqks"	7200
TXT	"v=spf1 a:mail3.drs.de a:mail4.drs.de ~all"	7200
TXT	"ZOOM-check: M.M.2021"	7200
TXT	"i2bfjrs8lhd6otb90apjq3t4ud"	7200
TXT	"google-site-verification=9qB1vIA9GVz_tIcEA31LIpWtBjWewfx4pS59enVWHTU"	7200
TXT	"cisco-ci-domain-verification=5cc8c337f3343a9626da9a1d7d290423d263e54a4019c14b4a91312cf4e099f"	7200
TXT	"google-site-verification=XMk939fbkCZhgDgKjK7VL07PmcRkvZ7DAJxt_JQXIY0"	7200
TXT	"ZOOM_verify_5akrY4TxSJuORnmhtZ4zlA"	7200

Checks

✓ TTLs within range #32

TTLs: A 2h, AAAA 2h, MX 2h, NS 2h. The NS TTL at the parent is 1d and in the zone 2h; resolvers may use either.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
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Wildcard record

A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.

#34
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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