Domain report: decorrespondent.nl

Registration

info

.nl country-code

Found

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

Lookup error: https://rdap.sidn.nl/domain/decorrespondent.nl returned HTTP 429

Checks

i

.nl 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

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

Could not be checked

The RDAP lookup failed, so this could not be checked: https://rdap.sidn.nl/domain/decorrespondent.nl returned HTTP 429

#3

Delegation

info

dns109.ovh.net, ns109.ovh.net

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: dns109.ovh.net, ns109.ovh.net
NS in the zone: dns109.ovh.net, ns109.ovh.net

Nameserver	Addresses	Network (AS)	Glue
dns109.ovh.net	5.196.41.217 2001:41d0:d01:300::2	AS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR	-
ns109.ovh.net	5.135.67.9 2001:41d0:b00:fd00::2	AS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR	-

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns109.ovh.net, ns109.ovh.net.

#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 2 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS16276 (OVH - OVH SAS, FR): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
i

All nameserver names under .net

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
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

pass

4 of 4 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns109.ovh.net 5.196.41.217	NOERROR, 19 ms, authoritative	no	yes / yes	refused	-
dns109.ovh.net 2001:41d0:d01:300::2	NOERROR, 18 ms, authoritative	no	yes / yes	refused	-
ns109.ovh.net 5.135.67.9	NOERROR, 17 ms, authoritative	no	yes / yes	refused	-
ns109.ovh.net 2001:41d0:b00:fd00::2	NOERROR, 16 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 4 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

warn

serial 2091639726 · primary dns109.ovh.net

Found

Primary (MNAME): dns109.ovh.net
Contact (RNAME): tech.ovh.net
Serial: 2091639726
Refresh / retry: 86400 s / 3600 s
Expire: 3600000 s
Negative TTL: 60 s

Serial per nameserver

Nameserver	Serial
dns109.ovh.net (5.196.41.217)	2091639726
dns109.ovh.net (2001:41d0:d01:300::2)	2091639726
ns109.ovh.net (5.135.67.9)	2091639726
ns109.ovh.net (2001:41d0:b00:fd00::2)	2091639726

Checks

✓ Serial 2091639726 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 1d, retry 1h, expire 1000h, negative TTL 1m.

#23
✓ Primary is a public nameserver #24

The primary nameserver dns109.ovh.net is one of the listed nameservers.
✓ Contact tech@ovh.net #25

The SOA RNAME tech.ovh.net means tech@ovh.net.
✓ Timestamp serial #26

The serial 2091639726 is a Unix timestamp (2036-04-12 19:02 UTC).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 0 iterations, 0-byte salt
Signatures valid until: 9 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
17539	RSASHA256 (8)	SHA256 281B85DAC3213140…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
48120	ZSK (256)	RSASHA256 (8)
17539	KSK (257)	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 17539 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-09 #30

The earliest DNSKEY/SOA signature expires at 2026-11-09 12:42 UTC.
✓ NSEC3 as recommended #31

The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

info

20 records at the apex

Found

Read from: 5.196.41.217:53

Type	Value	TTL
SOA	dns109.ovh.net. tech.ovh.net. 2091639726 86400 3600 3600000 60	3600
NS	ns109.ovh.net.	3600
NS	dns109.ovh.net.	3600
A	52.29.112.136	600
MX	40 alt3.aspmx.l.google.com.	3600
MX	40 alt4.aspmx.l.google.com.	3600
MX	20 alt2.aspmx.l.google.com.	3600
MX	20 alt1.aspmx.l.google.com.	3600
MX	10 aspmx.l.google.com.	3600
TXT	"facebook-domain-verification=9vvg7i8wn1jsj2etoka9ljm95pmrx8"	600
TXT	"apple-domain-verification=bSMKJjGjDmJ5Qttp"	600
TXT	"anthropic-domain-verification-j591xa=si8iYBe0M7atppi5b5biRiCll"	600
TXT	"v=spf1 include:_spf.google.com include:mail.zendesk.com include:spf.ahasend.com include:_spf.xqueue.com ~all"	600
TXT	"atlassian-domain-verification=aaaKsjmUpbvEILa0gLXGSf0pIJL9mwD6dgCOhKU8XD8algBsw92sxxrIOj9fSlWS"	600
TXT	"MS=6A5F3F54E5D4498FEA44A3CF5C157202DF5D75A4"	600
TXT	"google-site-verification=Jz7iVe8TZEHjfoSw4hh1npy7l5d_gVKs3EjD0aNkKts"	600
CAA	0 issue "amazon.com"	3600
CAA	0 iodef "mailto:ops@decorrespondent.nl"	3600
CAA	0 issue "pki.goog"	3600
CAA	0 issue "letsencrypt.org"	3600

Checks

✓ TTLs within range #32

TTLs: A 10m, MX 1h, NS 1h.
✓ 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, pki.goog, letsencrypt.org.