Domain report: desy.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

pass

dns-2.dfn.de, dwalin.nikhef.nl, ext-dns-2.cern.ch, milky.desy.de, way.desy.de

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: dns-2.dfn.de, dwalin.nikhef.nl, ext-dns-2.cern.ch, milky.desy.de, way.desy.de
NS in the zone: dns-2.dfn.de, dwalin.nikhef.nl, ext-dns-2.cern.ch, milky.desy.de, way.desy.de

Nameserver	Addresses	Network (AS)	Glue
dns-2.dfn.de	193.174.75.54 2001:638:d:b102::1	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	-
dwalin.nikhef.nl	192.16.199.17 2001:610:120:1000::199:17	AS1104 Nikhef - Stichting Nederlandse Wetenschappelijk Onderzoek Instituten, NL AS1103 SURFNET-NL - SURF B.V., NL	-
ext-dns-2.cern.ch	192.91.245.85 2001:1458:1:2::100:85	AS513 CERN - CERN - European Organization for Nuclear Research, CH AS513 CERN - CERN - European Organization for Nuclear Research, CH	-
milky.desy.de	131.169.40.200 2001:638:700:1028::1:c8	AS1754 DESY-HAMBURG - Deutsches Elektronen-Synchrotron DESY, DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	131.169.40.200 2001:638:700:1028::1:c8
way.desy.de	131.169.194.200 2001:638:700:10c2::1:c8	AS1754 DESY-HAMBURG - Deutsches Elektronen-Synchrotron DESY, DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	131.169.194.200 2001:638:700:10c2::1:c8

Checks

✓ 5 nameservers #6

Delegated to dns-2.dfn.de, dwalin.nikhef.nl, ext-dns-2.cern.ch, milky.desy.de, way.desy.de.
✓ 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: milky.desy.de, way.desy.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 5 IPv4 /24s and 4 IPv6 /48s.
✓ 5 autonomous systems #11

The nameservers are spread over: AS1103 (SURFNET-NL - SURF B.V., NL): 1 address; AS1104 (Nikhef - Stichting Nederlandse Wetenschappelijk Onderzoek Instituten, NL): 1 address; AS1754 (DESY-HAMBURG - Deutsches Elektronen-Synchrotron DESY, DE): 2 addresses; AS513 (CERN - CERN - European Organization for Nuclear Research, CH): 2 addresses; AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE): 4 addresses.
✓ Nameserver names under 3 TLDs #12

Nameserver names use the TLDs .ch, .de, .nl.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

info

10 of 10 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns-2.dfn.de 193.174.75.54	NOERROR, 7 ms, authoritative	no	yes / yes	refused	0
dns-2.dfn.de 2001:638:d:b102::1	NOERROR, 7 ms, authoritative	no	yes / yes	refused	0
dwalin.nikhef.nl 192.16.199.17	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
dwalin.nikhef.nl 2001:610:120:1000::199:17	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ext-dns-2.cern.ch 192.91.245.85	NOERROR, 17 ms, authoritative	no	yes / yes	refused	UNKNOWN
ext-dns-2.cern.ch 2001:1458:1:2::100:85	NOERROR, 17 ms, authoritative	no	yes / yes	refused	UNKNOWN
milky.desy.de 131.169.40.200	NOERROR, 17 ms, authoritative	no	yes / yes	refused	-
milky.desy.de 2001:638:700:1028::1:c8	NOERROR, 17 ms, authoritative	no	yes / yes	refused	-
way.desy.de 131.169.194.200	NOERROR, 20 ms, authoritative	no	yes / yes	refused	-
way.desy.de 2001:638:700:10c2::1:c8	NOERROR, 20 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 10 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: dns-2.dfn.de: "0"; ext-dns-2.cern.ch: "UNKNOWN".

#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 2405725710 · primary milky.desy.de

Found

Primary (MNAME): milky.desy.de
Contact (RNAME): noc.desy.de
Serial: 2405725710
Refresh / retry: 1800 s / 900 s
Expire: 604800 s
Negative TTL: 600 s

Serial per nameserver

Nameserver	Serial
dns-2.dfn.de (193.174.75.54)	2405725710
dns-2.dfn.de (2001:638:d:b102::1)	2405725710
dwalin.nikhef.nl (192.16.199.17)	2405661489
dwalin.nikhef.nl (2001:610:120:1000::199:17)	2405661489
ext-dns-2.cern.ch (192.91.245.85)	2405661489
ext-dns-2.cern.ch (2001:1458:1:2::100:85)	2405661489
milky.desy.de (131.169.40.200)	2405661489
milky.desy.de (2001:638:700:1028::1:c8)	2405661489
way.desy.de (131.169.194.200)	2405661489
way.desy.de (2001:638:700:10c2::1:c8)	2405661489

Checks

!

Serials differ

The nameservers serve different versions of the zone: 2405661489 on dwalin.nikhef.nl (192.16.199.17), dwalin.nikhef.nl (2001:610:120:1000::199:17), ext-dns-2.cern.ch (192.91.245.85), ext-dns-2.cern.ch (2001:1458:1:2::100:85), milky.desy.de (131.169.40.200), milky.desy.de (2001:638:700:1028::1:c8), way.desy.de (131.169.194.200), way.desy.de (2001:638:700:10c2::1:c8); 2405725710 on dns-2.dfn.de (193.174.75.54), dns-2.dfn.de (2001:638:d:b102::1). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.

#22
✓ Timers within recommendations #23

SOA refresh 30m, retry 15m, expire 7d, negative TTL 10m.
✓ Primary is a public nameserver #24

The primary nameserver milky.desy.de is one of the listed nameservers.
✓ Contact noc@desy.de #25

The SOA RNAME noc.desy.de means noc@desy.de.
✓ Timestamp serial #26

The serial 2405725710 is a Unix timestamp (2046-03-27 01:08 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

pass

25 records at the apex

Found

Read from: 193.174.75.54:53

Type	Value	TTL
SOA	milky.desy.de. noc.desy.de. 2405725710 1800 900 604800 600	86400
NS	dns-2.dfn.de.	86400
NS	dwalin.nikhef.nl.	86400
NS	way.desy.de.	86400
NS	milky.desy.de.	86400
NS	ext-dns-2.cern.ch.	86400
A	131.169.5.106	86400
MX	20 c1721.mx.srv.dfn.de.	3600
MX	20 a1721.mx.srv.dfn.de.	3600
MX	20 b1721.mx.srv.dfn.de.	3600
TXT	"MS=ms25975164"	3600
TXT	"jamf-site-verification=IhsaJKXjMwxgqQ6BLavOYQ"	3600
TXT	"_globalsign-domain-verification=IurN8CNrkwpdTygr9ullTt0ERzv3njFDkq1Vu881RX"	3600
TXT	"sending_domain871621=bac3104299add3e43e9ae4f3daff5d839f2f6c137f47dc33e28981e283be1d77"	3600
TXT	"v=spf1 include:_spf1.desy.de include:_spf2.desy.de include:_spf.zimpel.de include:aspmx.pardot.com a:web07.hosting.astendo.de ?all"	3600
TXT	"google-site-verification=Es9Pmp495cMgDRykWNAsCRWGutFSQJTRgI1pmDMzQ7E"	3600
TXT	"HARICA-zWoKHz0MOb4U6uGGtyk"	3600
TXT	"globalsign-domain-verification=ro-lbcWwCRY5nLv0UFTFbaR8zhnI0Bs9TwrfdmPD5"	3600
TXT	"cisco-ci-domain-verification=59878483e4881ac6dea5eb1d6b9f75b94fc05206ad35a47e224ffb31f1ec72aa"	3600
CAA	0 issue "letsencrypt.org"	86400
CAA	0 issue "globalsign.com"	86400
CAA	0 issue "sectigo.com"	86400
CAA	0 issue "amazon.com"	86400
CAA	0 issue "harica.gr"	86400
CAA	0 issue "pki.dfn.de"	86400

Checks

✓ TTLs within range #32

TTLs: A 1d, MX 1h, NS 1d.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
✓ No wildcard #34

Names that don't exist return NXDOMAIN.
✓ CAA restricts issuance #35

Certificates may be issued by: letsencrypt.org, globalsign.com, sectigo.com, amazon.com, harica.gr, pki.dfn.de.