revell.de

Checked 22 October 2026, 00:00 UTC · via 8.8.8.8
!Passed with warnings
23 passed 4 warnings 0 failed 6 info

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

a.managed-ns.com, b.managed-ns.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
a.managed-ns.com, b.managed-ns.de
NS in the zone
a.managed-ns.com, b.managed-ns.de
NameserverAddressesNetwork (AS)Glue
a.managed-ns.com192.174.68.102 2001:67c:1bc::102AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
b.managed-ns.de176.97.158.102 2001:67c:10b8::102AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT176.97.158.102 2001:67c:10b8::102

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: a.managed-ns.com, b.managed-ns.de.
    #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 (AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 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
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .de.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a.managed-ns.com 192.174.68.102NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
a.managed-ns.com 2001:67c:1bc::102NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
b.managed-ns.de 176.97.158.102NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
b.managed-ns.de 2001:67c:10b8::102NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: a.managed-ns.com: "RcodeZero DNS"; b.managed-ns.de: "reg-wie1".
    #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

warn

serial 2026103563 · primary a.managed-ns.com

Found

Primary (MNAME)
a.managed-ns.com
Contact (RNAME)
domainadmin.managed-ip.com
Serial
2026103563
Refresh / retry
43200 s / 7200 s
Expire
1209600 s
Negative TTL
60 s

Serial per nameserver

NameserverSerial
a.managed-ns.com (192.174.68.102)2026103563
a.managed-ns.com (2001:67c:1bc::102)2026103563
b.managed-ns.de (176.97.158.102)2026103564
b.managed-ns.de (2001:67c:10b8::102)2026103564

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 2026103563 on a.managed-ns.com (192.174.68.102), a.managed-ns.com (2001:67c:1bc::102); 2026103564 on b.managed-ns.de (176.97.158.102), b.managed-ns.de (2001:67c:10b8::102). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 1m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 12h, retry 2h, expire 14d, negative TTL 1m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver a.managed-ns.com is one of the listed nameservers.
  • ✓ Contact domainadmin@managed-ip.com #25
    The SOA RNAME domainadmin.managed-ip.com means domainadmin@managed-ip.com.
  • ✓ Timestamp serial #26
    The serial 2026103563 is a Unix timestamp (2034-03-16 06:32 UTC).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
0 iterations, 0-byte salt
Signatures valid until
29 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
37577ECDSAP256SHA256 (13)SHA256 8665C12DCA818F8A…yes

DNSKEY in the zone

Key tagRoleAlgorithm
1207ZSK (256)ECDSAP256SHA256 (13)
32616ZSK (256)ECDSAP256SHA256 (13)
37577KSK (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 37577 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • !
    Signatures expire soon
    The earliest signature expires at 2026-10-29 00:00 UTC (in 168h0m0s). Check that automatic re-signing works.
    #30
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

warn

13 records at the apex

Found

Read from
192.174.68.102:53
TypeValueTTL
SOAa.managed-ns.com. domainadmin.managed-ip.com. 2026103563 43200 7200 1209600 6060
NSa.managed-ns.com.60
NSb.managed-ns.de.60
A23.227.38.6560
MX10 revell-de.mail.protection.outlook.com.60
TXT"MS=ms72225245"60
TXT"apple-domain-verification=nWLiIDPYZvePcrxO"60
TXT"facebook-domain-verification=cxs8cir5gqcv28xpfob3eef3cg9u3w"60
TXT"pinterest-site-verification=ddf89b8727ec259227dc0ba60c523b46"60
TXT"google-site-verification=3MZhvs3xXAq16BZu8JmACqmIK0rsgAN98D-JtwNVy1c"60
TXT"1acjcUsq+Z+wy0+FpgugagwVN6gdjB0ty26iudI9G+fLJvBYlevGkZ+pP1Ch+fsXxuuWqvzLTK8bDXzdeP2vSQ=="60
TXT"atlassian-domain-verification=fFedyk/7sZz3DsC0i8a6SDvY/HT3aTvoOWVgWyrDqepXLKtX5p0rRFeaxJ6Klv72"60
TXT"v=spf1 mx a:revell-news.de ip4:93.90.206.207 ip4:82.165.70.224 ip4:82.165.68.227 ip4:94.130.133.135 ip4:82.165.113.226 ip4:82.165.64.98 ip4:178.77.99.23 ip4:212.227.214.133 include:spf.protection.outlook.com include:spf.mailjet.com -all"60

Checks

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