robeco.nl

Checked 22 October 2026, 15:41 UTC · via 8.8.8.8
!Passed with warnings
21 passed 2 warnings 0 failed 6 info

Registration

info

.nl country-code

Found

TLD
.nl (country-code)
ICANN policies apply
no
Lookup error: https://rdap.sidn.nl/domain/robeco.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/robeco.nl returned HTTP 429
    #3

Delegation

info

ns1.esdns.net, ns2.esdns.net, ns3.esdns.net, ns4.esdns.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.esdns.net, ns2.esdns.net, ns3.esdns.net, ns4.esdns.net
NS in the zone
ns1.esdns.net, ns2.esdns.net, ns3.esdns.net, ns4.esdns.net
NameserverAddressesNetwork (AS)Glue
ns1.esdns.net204.74.66.144 2001:502:f3ff::290AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
ns2.esdns.net204.74.110.144 2610:a1:1014::290AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
ns3.esdns.net204.74.67.144 2610:a1:1015::290AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
ns4.esdns.net204.74.111.144 2001:502:4612::290AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.esdns.net, ns2.esdns.net, ns3.esdns.net, ns4.esdns.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 (AS12008 (VERCARA - Vercara, LLC, 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
  • 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

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.esdns.net 204.74.66.144NOERROR, 6 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns1.esdns.net 2001:502:f3ff::290NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.esdns.net 204.74.110.144NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.esdns.net 2610:a1:1014::290NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns3.esdns.net 204.74.67.144NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns3.esdns.net 2610:a1:1015::290NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns4.esdns.net 204.74.111.144NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns4.esdns.net 2001:502:4612::290NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.esdns.net: "UltraDNS Nameserver"; ns2.esdns.net: "UltraDNS Nameserver"; ns3.esdns.net: "UltraDNS Nameserver"; ns4.esdns.net: "UltraDNS Nameserver".
    #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 560 · primary ns1.esdns.net

Found

Primary (MNAME)
ns1.esdns.net
Contact (RNAME)
dnsmaster2.dxc.com
Serial
560
Refresh / retry
3600 s / 1800 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.esdns.net (204.74.66.144)560
ns1.esdns.net (2001:502:f3ff::290)560
ns2.esdns.net (204.74.110.144)560
ns2.esdns.net (2610:a1:1014::290)560
ns3.esdns.net (204.74.67.144)560
ns3.esdns.net (2610:a1:1015::290)560
ns4.esdns.net (204.74.111.144)560
ns4.esdns.net (2001:502:4612::290)560

Checks

  • ✓ Serial 560 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 30m, expire 14d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.esdns.net is one of the listed nameservers.
  • ✓ Contact dnsmaster2@dxc.com #25
    The SOA RNAME dnsmaster2.dxc.com means dnsmaster2@dxc.com.
  • ✓ Counter serial #26
    The serial 560 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

21 records at the apex

Found

Read from
204.74.66.144:53
TypeValueTTL
SOAns1.esdns.net. dnsmaster2.dxc.com. 560 3600 1800 1209600 3003600
NSns1.esdns.net.3600
NSns2.esdns.net.3600
NSns3.esdns.net.3600
NSns4.esdns.net.3600
A150.171.109.10110
AAAA2603:1061:14:69::17
MX0 robeco-nl.mail.protection.outlook.com.3600
TXT"MS=ms44309148"3600
TXT"_ny82vq4ah5n23wrogjrkgaz20npht5k"3600
TXT"msfpkey=2ybnpp2bc15d2xew2k7eldvwf"3600
TXT"hibp-verify=dweb_1qks5a3n1y0paetjxlbm1iv4"3600
TXT"apple-domain-verification=7654JBuGgLV6FrVF"3600
TXT"docusign=807ff2e6-4d1a-4d28-98f0-1618d9e1515f"3600
TXT"docusign=c405dc64-1ff8-4e7e-a966-1cbae49b6f20"3600
TXT"mentimeter-41221bc4-dc5e-4e97-a684-e193ec6787a8"3600
TXT"amazonses:HOY/t24uoesbxzdhodfgof2Htj9YBu61UTVY926xf10="3600
TXT"amazonses:QajkcyOlyaqn3in3Xv7gcCwBBVaCyBk+cUl/YdRi9CQ="3600
TXT"neat-pulse-domain-verification-6N58jLM=4f6c8b38-a8d1-44a2-a579-fc03194a55c6"3600
TXT"Dynatrace-site-verification=5c0accaa-910f-4c42-af75-df9589bc1d10__5q3ldbjlmt342m1342e1bpvanl"3600
TXT"v=spf1 include:spf.protection.outlook.com include:amazonses.com include:_spf.eu.messagegears.net include:spfhost.messageprovider.com ip4:145.61.200.0/27 ip4:206.164.208.92 ip4:206.164.208.93 ip4:198.207.147.224/27 ip4:204.239.0.224/27 ip4:20.229.9.21 -all"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (10s), AAAA (7s). Low TTLs are useful just before a planned change.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    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