zebrastraat.be

Checked 22 October 2026, 07:30 UTC · via 8.8.8.8
✗Problems found
19 passed 4 warnings 1 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

warn

ns.assist.be, ns2.assist.be, ns4.assist.be

Found

Parent zone
be
Delegation from
a.nsset.be (194.0.6.1)
NS at the parent
ns.assist.be, ns2.assist.be, ns4.assist.be
NS in the zone
ns.assist.be, ns2.assist.be, ns3.assist.be
NameserverAddressesNetwork (AS)Glue
ns.assist.be52.166.247.109AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US52.166.247.109
ns2.assist.be84.199.49.90AS6848 TELENET-AS - Telenet BV, BE84.199.49.90
ns3.assist.be (zone only)52.166.247.109AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4.assist.be (parent only)84.199.49.90AS6848 TELENET-AS - Telenet BV, BE84.199.49.90

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.assist.be, ns2.assist.be, ns4.assist.be.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns4.assist.be; only in the zone: ns3.assist.be. ns.assist.be, ns2.assist.be, ns3.assist.be, ns4.assist.be report NS ns.assist.be ns2.assist.be ns3.assist.be.
    #7
  • ✓ 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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS6848 (TELENET-AS - Telenet BV, BE): 2 addresses; AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US): 2 addresses.
  • i
    All nameserver names under .be
    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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

fail

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.assist.be 52.166.247.109NOERROR, 12 ms, authoritativeOPENyes / yesrefused-
ns2.assist.be 84.199.49.90NOERROR, 29 ms, authoritativeOPENyes / yesrefused-
ns3.assist.be 52.166.247.109NOERROR, 9 ms, authoritativeOPENyes / yesrefused-
ns4.assist.be 84.199.49.90NOERROR, 28 ms, authoritativeOPENyes / yesrefused-

Checks

  • ✓ All respond #14
    All 4 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✗
    Open recursion
    These nameservers resolve names for anyone, which makes them usable for DNS amplification attacks and cache poisoning: ns.assist.be (52.166.247.109), ns2.assist.be (84.199.49.90), ns3.assist.be (52.166.247.109), ns4.assist.be (84.199.49.90). Disable recursion on authoritative servers.
    #16
  • ✓ 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 143 · primary ns.assist.be

Found

Primary (MNAME)
ns.assist.be
Contact (RNAME)
dns.assist.be
Serial
143
Refresh / retry
900 s / 600 s
Expire
86400 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns.assist.be (52.166.247.109)143
ns2.assist.be (84.199.49.90)143
ns3.assist.be (52.166.247.109)143
ns4.assist.be (84.199.49.90)143

Checks

  • ✓ Serial 143 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d; expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 15m, retry 10m, expire 1d, negative TTL 1h.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.assist.be is one of the listed nameservers.
  • ✓ Contact dns@assist.be #25
    The SOA RNAME dns.assist.be means dns@assist.be.
  • ✓ Counter serial #26
    The serial 143 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

info

9 records at the apex

Found

Read from
52.166.247.109:53
TypeValueTTL
SOAns.assist.be. dns.assist.be. 143 900 600 86400 36003600
NSns3.assist.be.3600
NSns2.assist.be.3600
NSns.assist.be.3600
A20.107.105.2363600
MX0 zebrastraat-be.mail.protection.outlook.com.3600
TXT"v=spf1 mx ip4:212.123.8.48/28 ip4:212.123.29.144/27 ip4:84.199.49.72/27 ip4:20.107.105.236 include:spf.protection.outlook.com ~all"3600
TXT"msql5khl1mp5pdf66n9cm2sv7ym7pvk3"3600
TXT"MS=ms76508862"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
  • ✓ 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
  • 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