Domain report: elsevier.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

ns-1219.awsdns-24.org, ns-1998.awsdns-57.co.uk, ns-474.awsdns-59.com, ns-890.awsdns-47.net

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: ns-1219.awsdns-24.org, ns-1998.awsdns-57.co.uk, ns-474.awsdns-59.com, ns-890.awsdns-47.net
NS in the zone: ns-1219.awsdns-24.org, ns-1998.awsdns-57.co.uk, ns-474.awsdns-59.com, ns-890.awsdns-47.net

Nameserver	Addresses	Network (AS)	Glue
ns-1219.awsdns-24.org	205.251.196.195 2600:9000:5304:c300::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-1998.awsdns-57.co.uk	205.251.199.206 2600:9000:5307:ce00::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-474.awsdns-59.com	205.251.193.218 2600:9000:5301:da00::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-890.awsdns-47.net	205.251.195.122 2600:9000:5303:7a00::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-

Checks

✓ 4 nameservers #6

Delegated to ns-1219.awsdns-24.org, ns-1998.awsdns-57.co.uk, ns-474.awsdns-59.com, ns-890.awsdns-47.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 4 IPv4 /24s and 4 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
✓ Nameserver names under 4 TLDs #12

Nameserver names use the TLDs .com, .net, .org, .uk.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns-1219.awsdns-24.org 205.251.196.195	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-
ns-1219.awsdns-24.org 2600:9000:5304:c300::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns-1998.awsdns-57.co.uk 205.251.199.206	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-1998.awsdns-57.co.uk 2600:9000:5307:ce00::1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-474.awsdns-59.com 205.251.193.218	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-474.awsdns-59.com 2600:9000:5301:da00::1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-890.awsdns-47.net 205.251.195.122	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns-890.awsdns-47.net 2600:9000:5303:7a00::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 8 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 1 · primary ns-1219.awsdns-24.org

Found

Primary (MNAME): ns-1219.awsdns-24.org
Contact (RNAME): awsdns-hostmaster.amazon.com
Serial: 1
Refresh / retry: 7200 s / 900 s
Expire: 1209600 s
Negative TTL: 86400 s

Serial per nameserver

Nameserver	Serial
ns-1219.awsdns-24.org (205.251.196.195)	1
ns-1219.awsdns-24.org (2600:9000:5304:c300::1)	1
ns-1998.awsdns-57.co.uk (205.251.199.206)	1
ns-1998.awsdns-57.co.uk (2600:9000:5307:ce00::1)	1
ns-474.awsdns-59.com (205.251.193.218)	1
ns-474.awsdns-59.com (2600:9000:5301:da00::1)	1
ns-890.awsdns-47.net (205.251.195.122)	1
ns-890.awsdns-47.net (2600:9000:5303:7a00::1)	1

Checks

✓ Serial 1 everywhere #22

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

SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver ns-1219.awsdns-24.org is one of the listed nameservers.
✓ Contact awsdns-hostmaster@amazon.com #25

The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
✓ Counter serial #26

The serial 1 is a plain counter.

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

warn

45 records at the apex

Found

Read from: 205.251.196.195:53

Type	Value	TTL
SOA	ns-1219.awsdns-24.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400	900
NS	ns-1219.awsdns-24.org.	172800
NS	ns-1998.awsdns-57.co.uk.	172800
NS	ns-474.awsdns-59.com.	172800
NS	ns-890.awsdns-47.net.	172800
A	52.16.42.65	60
A	108.133.114.242	60
A	52.209.79.217	60
MX	10 elsevier-de.mail.protection.outlook.com.	300
TXT	"012d0d59-7717-455a-8969-70096ad6ff0f"	300
TXT	"09a4f09b-fc51-4223-9bb3-902c1ffe1aa9"	300
TXT	"0d19b870-5e1f-4cd1-8a82-24d705ac8ad6"	300
TXT	"2496dc61-35c0-4c71-b155-714743d0c806"	300
TXT	"2b1e7aaa-2ff4-4ca6-aca5-412a37983df0"	300
TXT	"3ka1Lya7tcaSfMQ17qPFOM+yVNG8+k8TZLVZGea6oXphPofV9mnBCcnAhwg2Fk7ukflSz0QFhEiCoRBv8b0aPA=="	300
TXT	"4aeeb49b-0702-4f60-b426-dae8747d45d0"	300
TXT	"54ff9827-0ab0-467f-a605-a0bb5ad068ac"	300
TXT	"5cd34db4-9200-4025-9cfb-50a03fdf4700"	300
TXT	"7425a041-d0bd-4a64-a0d8-af790d410f0c"	300
TXT	"MS=ms52829529"	300
TXT	"_globalsign-domain-verification=QeBlBDgscMfRNzuLrKLEaUE6s2_mgieyR_OXYdlwTd"	300
TXT	"_globalsign-domain-verification=voG7gHtoudSdNs274Ayqt27p9YZUXOppB_69y61slE"	300
TXT	"a176a17f-b5eb-4768-bad8-71a3a0b32f21"	300
TXT	"a1ff19ba-5beb-47f3-bd77-4231238c7c03"	300
TXT	"c0b25184-ca90-4fe4-b02e-b34eaad79c26"	300
TXT	"f33ddadb-cfcb-4256-b352-c89cac343b04"	300
TXT	"fdc8b0df-1c64-4518-a625-c64517e55ad5"	300
TXT	"google-site-verification=sYOZfROobDCTTfL3qOW9ERzdxYih4yITqo4ch1OCfZY"	300
TXT	"v=spf1 mx a ip4:34.253.35.177/32 a:relay.elsevier.de ?all"	300
CAA	0 issue "amazon.com"	300
CAA	0 issue "amazonaws.com"	300
CAA	0 issue "amazontrust.com"	300
CAA	0 issue "awstrust.com"	300
CAA	0 issue "letsencrypt.org"	300
CAA	0 issue "pki.goog; cansignhttpexchanges=yes"	300
CAA	0 issue "sectigo.com"	300
CAA	0 issue "ssl.com"	300
CAA	0 issuewild "amazon.com"	300
CAA	0 issuewild "amazonaws.com"	300
CAA	0 issuewild "amazontrust.com"	300
CAA	0 issuewild "awstrust.com"	300
CAA	0 issuewild "letsencrypt.org"	300
CAA	0 issuewild "pki.goog; cansignhttpexchanges=yes"	300
CAA	0 issuewild "sectigo.com"	300
CAA	0 issuewild "ssl.com"	300

Checks

!

Very low TTLs

These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 2d; resolvers may use either.

#32
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
i

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
✓ CAA restricts issuance #35

Certificates may be issued by: amazon.com, amazonaws.com, amazontrust.com, awstrust.com, letsencrypt.org, pki.goog, sectigo.com, ssl.com.