altavista.de

Checked 21 October 2026, 21:28 UTC · via 8.8.8.8
✗Problems found
21 passed 1 warning 1 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

ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.com
NS in the zone
ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.com
NameserverAddressesNetwork (AS)Glue
ns1.yahoo.com68.180.131.16 2001:4998:1b0::7961:686f:6f21AS10880 YAHOO-AN2 - Yahoo Holdings Inc., US AS10880 YAHOO-AN2 - Yahoo Holdings Inc., US-
ns2.yahoo.com68.142.255.16 2001:4998:1c0::7961:686f:6f21AS7280 YAHOO-FC - Yahoo Holdings Inc., US AS7280 YAHOO-FC - Yahoo Holdings Inc., US-
ns3.yahoo.com27.123.42.42 2406:8600:f03f:1f8::1003AS23879 YAHOO-INY - INY Edge site, US AS23879 YAHOO-INY - INY Edge site, US-
ns4.yahoo.com98.138.11.157AS36646 YAHOO-NE1 - Yahoo Holdings Inc., US-
ns5.yahoo.com202.165.97.53 2406:2000:1d0::7961:686f:6f21AS10880 YAHOO-AN2 - Yahoo Holdings Inc., US AS10880 YAHOO-AN2 - Yahoo Holdings Inc., US-

Checks

  • ✓ 5 nameservers #6
    Delegated to ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.com.
  • ✓ 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 5 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 4 autonomous systems #11
    The nameservers are spread over: AS10880 (YAHOO-AN2 - Yahoo Holdings Inc., US): 4 addresses; AS23879 (YAHOO-INY - INY Edge site, US): 2 addresses; AS36646 (YAHOO-NE1 - Yahoo Holdings Inc., US): 1 address; AS7280 (YAHOO-FC - Yahoo Holdings Inc., US): 2 addresses.
  • i
    All nameserver names under .com
    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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns4.yahoo.com.
    #13

Nameservers

fail

8 of 9 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.yahoo.com 68.180.131.16NOERROR, 9 ms, authoritativenoyes / yesrefusedYahoo
ns1.yahoo.com 2001:4998:1b0::7961:686f:6f21NOERROR, 19 ms, authoritativenoyes / yesrefusedYahoo
ns2.yahoo.com 68.142.255.16NOERROR, 3 ms, authoritativenoyes / yesrefusedYahoo
ns2.yahoo.com 2001:4998:1c0::7961:686f:6f21NOERROR, 4 ms, authoritativenoyes / yesrefusedYahoo
ns3.yahoo.com 27.123.42.42no responsenono / no--
ns3.yahoo.com 2406:8600:f03f:1f8::1003NOERROR, 136 ms, authoritativenoyes / yesrefusedYahoo
ns4.yahoo.com 98.138.11.157NOERROR, 126 ms, authoritativenoyes / yesrefusedYahoo
ns5.yahoo.com 202.165.97.53NOERROR, 186 ms, authoritativenoyes / yesrefusedYahoo
ns5.yahoo.com 2406:2000:1d0::7961:686f:6f21NOERROR, 242 ms, authoritativenoyes / yesrefusedYahoo

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: ns3.yahoo.com (27.123.42.42): read udp 46.225.38.91:50370->27.123.42.42:53: i/o timeout.
    #14
  • ✓ 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.yahoo.com: "Yahoo"; ns2.yahoo.com: "Yahoo"; ns3.yahoo.com: "Yahoo"; ns4.yahoo.com: "Yahoo"; ns5.yahoo.com: "Yahoo".
    #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

info

serial 2026082401 · primary ns-admin.altavista.com

Found

Primary (MNAME)
ns-admin.altavista.com
Contact (RNAME)
dns-technical.av.com
Serial
2026082401
Refresh / retry
10000 s / 1800 s
Expire
604800 s
Negative TTL
40000 s

Serial per nameserver

NameserverSerial
ns1.yahoo.com (68.180.131.16)2026082401
ns1.yahoo.com (2001:4998:1b0::7961:686f:6f21)2026082401
ns2.yahoo.com (68.142.255.16)2026082401
ns2.yahoo.com (2001:4998:1c0::7961:686f:6f21)2026082401
ns3.yahoo.com (2406:8600:f03f:1f8::1003)2026082401
ns4.yahoo.com (98.138.11.157)2026082401
ns5.yahoo.com (202.165.97.53)2026082401
ns5.yahoo.com (2406:2000:1d0::7961:686f:6f21)2026082401

Checks

  • ✓ Serial 2026082401 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 30m, expire 7d, negative TTL 11h6m40s.
  • i
    Hidden master (not resolvable)
    The primary nameserver ns-admin.altavista.com is not listed as a nameserver and does not resolve publicly: a hidden master, or a placeholder name. Some tools (e.g. dynamic updates) use MNAME to find the primary.
    #24
  • ✓ Contact dns-technical@av.com #25
    The SOA RNAME dns-technical.av.com means dns-technical@av.com.
  • ✓ Date-based serial #26
    The serial 2026082401 follows the YYYYMMDDnn convention (2026-08-24).

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

pass

15 records at the apex

Found

Read from
68.180.131.16:53
TypeValueTTL
SOAns-admin.altavista.com. dns-technical.av.com. 2026082401 10000 1800 604800 4000040000
NSns1.yahoo.com.40000
NSns3.yahoo.com.40000
NSns2.yahoo.com.40000
NSns5.yahoo.com.40000
NSns4.yahoo.com.40000
A13.248.158.740000
A76.223.84.19240000
MX0 .40000
TXT"v=spf1 +exists:CL.%{i}.FR.%{s}.HE.%{h}.null.spf.altavista.com -all"40000
TXT"This domain sends no email"40000
TXT"Null SPF is for tracking purposes only"40000
TXT"All mail claiming to be from altavista.de is forged"40000
CAA0 iodef "mailto:security@yahooinc.com"40000
CAA0 issue ";"40000

Checks

  • ✓ TTLs within range #32
    TTLs: A 11h6m40s, MX 11h6m40s, NS 11h6m40s. The NS TTL at the parent is 1d and in the zone 11h6m40s; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: none (issuance forbidden).