impermo.be

Checked 22 October 2026, 06:40 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 0 failed 5 info

Registration

info

.be country-code

Found

TLD
.be (country-code)
ICANN policies apply
no

Checks

  • i
    .be 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
    .be is delegated in the root zone and DNSSEC-signed.
  • i
    Registration data not available
    No registration data via RDAP: the registry of .be offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.
    #3

Delegation

info

ns-1212.awsdns-23.org, ns-1833.awsdns-37.co.uk, ns-331.awsdns-41.com, ns-843.awsdns-41.net

Found

Parent zone
be
Delegation from
a.nsset.be (194.0.6.1)
NS at the parent
ns-1212.awsdns-23.org, ns-1833.awsdns-37.co.uk, ns-331.awsdns-41.com, ns-843.awsdns-41.net
NS in the zone
ns-1212.awsdns-23.org, ns-1833.awsdns-37.co.uk, ns-331.awsdns-41.com, ns-843.awsdns-41.net
NameserverAddressesNetwork (AS)Glue
ns-1212.awsdns-23.org205.251.196.188 2600:9000:5304:bc00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1833.awsdns-37.co.uk205.251.199.41 2600:9000:5307:2900::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-331.awsdns-41.com205.251.193.75 2600:9000:5301:4b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-843.awsdns-41.net205.251.195.75 2600:9000:5303:4b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1212.awsdns-23.org, ns-1833.awsdns-37.co.uk, ns-331.awsdns-41.com, ns-843.awsdns-41.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

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1212.awsdns-23.org 205.251.196.188NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1212.awsdns-23.org 2600:9000:5304:bc00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1833.awsdns-37.co.uk 205.251.199.41NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1833.awsdns-37.co.uk 2600:9000:5307:2900::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-331.awsdns-41.com 205.251.193.75NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-331.awsdns-41.com 2600:9000:5301:4b00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-843.awsdns-41.net 205.251.195.75NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-843.awsdns-41.net 2600:9000:5303:4b00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-

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-331.awsdns-41.com

Found

Primary (MNAME)
ns-331.awsdns-41.com
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1212.awsdns-23.org (205.251.196.188)1
ns-1212.awsdns-23.org (2600:9000:5304:bc00::1)1
ns-1833.awsdns-37.co.uk (205.251.199.41)1
ns-1833.awsdns-37.co.uk (2600:9000:5307:2900::1)1
ns-331.awsdns-41.com (205.251.193.75)1
ns-331.awsdns-41.com (2600:9000:5301:4b00::1)1
ns-843.awsdns-41.net (205.251.195.75)1
ns-843.awsdns-41.net (2600:9000:5303:4b00::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-331.awsdns-41.com 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

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
22 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
37279ECDSAP256SHA256 (13)SHA256 CA78B7A6F5431018…yes

DNSKEY in the zone

Key tagRoleAlgorithm
42423ZSK (256)ECDSAP256SHA256 (13)
34196ZSK (256)ECDSAP256SHA256 (13)
37279KSK (257)ECDSAP256SHA256 (13)

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 37279 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 2h0m0s and created on demand; the current one was made at 2026-10-22 05:40 UTC and expires at 2026-10-22 07:45 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

warn

31 records at the apex

Found

Read from
205.251.196.188:53
TypeValueTTL
SOAns-331.awsdns-41.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400300
NSns-1212.awsdns-23.org.3600
NSns-1833.awsdns-37.co.uk.3600
NSns-331.awsdns-41.com.3600
NSns-843.awsdns-41.net.3600
A18.66.102.4460
A18.66.102.3560
A18.66.102.10260
A18.66.102.10560
AAAA2600:9000:223c:4200:10:32b3:f340:93a160
AAAA2600:9000:223c:e400:10:32b3:f340:93a160
AAAA2600:9000:223c:8000:10:32b3:f340:93a160
AAAA2600:9000:223c:b800:10:32b3:f340:93a160
AAAA2600:9000:223c:5c00:10:32b3:f340:93a160
AAAA2600:9000:223c:3000:10:32b3:f340:93a160
AAAA2600:9000:223c:3200:10:32b3:f340:93a160
AAAA2600:9000:223c:2400:10:32b3:f340:93a160
MX10 impermo-be.mail.protection.outlook.com.300
TXT"5b4qFJrrzSLNTyyPDB71ebN1bemVeTDH"60
TXT"anthropic-domain-verification-yb599e=rIo6MOYdAQYvvWjga7Im8wWqq"60
TXT"apple-domain-verification=aqACfebK8DwhvoNu"60
TXT"atlassian-domain-verification=h0Q9HzanX8YPaeQC8096ehNAP1GXiSOPOuHmsjIFyEffzmPvs2moVjDb1fHUutEd"60
TXT"facebook-domain-verification=bpk48dt5sw6p85p7g1wgr8uzgj2lb6"60
TXT"facebook-domain-verification=h6wtiesy4jlklsjtfbolj2vdsl9h28"60
TXT"google-site-verification=osK9jXaaYsLwyt3udf_LT7JsY7pSpJHk5ITckmv3fjA"60
TXT"google-site-verification=qJN0BLWvvJVg4pg7KTH-kAl98kCc4xpWwelR9KrGXoM"60
TXT"klaviyo-site-verification=R7A5V3"60
TXT"klaviyo-site-verification=WZqDxw"60
TXT"m5wMa47vVY7g4FDYpnCJExVj/oEaUFv4yhqcSVHa/5s="60
TXT"openai-domain-verification=dv-yZz7pPWW4kge71HdsKko002I"60
TXT"v=spf1 include:spf.protection.outlook.com include:spf.impermo.be include:spf.mandrillapp.com include:servers.mcsv.net include:_spf.psm.knowbe4.com include:mail.zendesk.com include:sendgrid.net -all"60

Checks

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