renfe.com

Checked 22 October 2026, 10:30 UTC · via 8.8.8.8
✗Problems found
23 passed 3 warnings 1 failed 4 info

Registration

info

.com generic · Interdominios, Inc. · expires 2027-04-05

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Interdominios, Inc.
Registered
5 April 2001
Last changed
22 March 2026
Expires
5 April 2027
Status
client transfer prohibited
Registry nameservers
a1-90.akam.net, a13-65.akam.net, a22-66.akam.net, a24-67.akam.net, a7-64.akam.net, a8-65.akam.net
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2027-04-05 #3
    The registration is valid until 2027-04-05 (165 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

a1-90.akam.net, a13-65.akam.net, a22-66.akam.net, a24-67.akam.net, a7-64.akam.net, a8-65.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-90.akam.net, a13-65.akam.net, a22-66.akam.net, a24-67.akam.net, a7-64.akam.net, a8-65.akam.net
NS in the zone
a1-90.akam.net, a13-65.akam.net, a22-66.akam.net, a24-67.akam.net, a7-64.akam.net, a8-65.akam.net, dns1.renfe.es, dns2.renfe.es
NameserverAddressesNetwork (AS)Glue
a1-90.akam.net193.108.91.90 2600:1401:2::5aAS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a13-65.akam.net2.22.230.65 2600:1480:800::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a22-66.akam.net23.211.61.66 2600:1480:7800::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a24-67.akam.net2.16.130.67 2600:1480:9800::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-64.akam.net23.61.199.64 2600:1406:32::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-65.akam.net2.16.40.65 2600:1403:a::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
dns1.renfe.es (zone only)213.144.49.35AS15937 ADIF - ADIF, ES-
dns2.renfe.es (zone only)213.144.49.43AS15937 ADIF - ADIF, ES-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-90.akam.net, a13-65.akam.net, a22-66.akam.net, a24-67.akam.net, a7-64.akam.net, a8-65.akam.net.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: dns1.renfe.es, dns2.renfe.es. a1-90.akam.net, a13-65.akam.net, a22-66.akam.net, a24-67.akam.net, a7-64.akam.net, a8-65.akam.net report NS a1-90.akam.net a13-65.akam.net a22-66.akam.net a24-67.akam.net a7-64.akam.net a8-65.akam.net dns1.renfe.es dns2.renfe.es.
    #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 7 IPv4 /24s and 6 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS15937 (ADIF - ADIF, ES): 2 addresses; AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 1 address; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 11 addresses.
  • 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: dns1.renfe.es, dns2.renfe.es.
    #13

Nameservers

fail

12 of 14 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-90.akam.net 193.108.91.90NOERROR, 3 ms, authoritativenoyes / yesrefused41824.4
a1-90.akam.net 2600:1401:2::5aNOERROR, 3 ms, authoritativenoyes / yesrefused41824.7
a13-65.akam.net 2.22.230.65NOERROR, 6 ms, authoritativenoyes / yesrefused41824.4
a13-65.akam.net 2600:1480:800::41NOERROR, 5 ms, authoritativenoyes / yesrefused41824.8
a22-66.akam.net 23.211.61.66NOERROR, 5 ms, authoritativenoyes / yesrefused48878.27
a22-66.akam.net 2600:1480:7800::42NOERROR, 6 ms, authoritativenoyes / yesrefused48878.30
a24-67.akam.net 2.16.130.67NOERROR, 4 ms, authoritativenoyes / yesrefused48878.30
a24-67.akam.net 2600:1480:9800::43NOERROR, 5 ms, authoritativenoyes / yesrefused48878.33
a7-64.akam.net 23.61.199.64NOERROR, 5 ms, authoritativenoyes / yesrefused41824.11
a7-64.akam.net 2600:1406:32::40NOERROR, 5 ms, authoritativenoyes / yesrefused41824.5
a8-65.akam.net 2.16.40.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.26
a8-65.akam.net 2600:1403:a::41NOERROR, 6 ms, authoritativenoyes / yesrefused48878.32
dns1.renfe.es 213.144.49.35no responsenono / no--
dns2.renfe.es 213.144.49.43no responsenono / no--

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: dns1.renfe.es (213.144.49.35): read udp 46.225.38.91:60689->213.144.49.35:53: i/o timeout; dns2.renfe.es (213.144.49.43): read udp 46.225.38.91:60506->213.144.49.43:53: 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-90.akam.net: "41824.4"; a1-90.akam.net: "41824.7"; a13-65.akam.net: "41824.4"; a13-65.akam.net: "41824.8"; a22-66.akam.net: "48878.27"; a22-66.akam.net: "48878.30"; a24-67.akam.net: "48878.30"; a24-67.akam.net: "48878.33"; a7-64.akam.net: "41824.11"; a7-64.akam.net: "41824.5"; a8-65.akam.net: "48878.26"; a8-65.akam.net: "48878.32". Hide or replace the version string.
    #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 2023020627 · primary dns1.renfe.es

Found

Primary (MNAME)
dns1.renfe.es
Contact (RNAME)
dnsmaster.renfe.es
Serial
2023020627
Refresh / retry
3600 s / 360 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
a1-90.akam.net (193.108.91.90)2023020627
a1-90.akam.net (2600:1401:2::5a)2023020627
a13-65.akam.net (2.22.230.65)2023020627
a13-65.akam.net (2600:1480:800::41)2023020627
a22-66.akam.net (23.211.61.66)2023020627
a22-66.akam.net (2600:1480:7800::42)2023020627
a24-67.akam.net (2.16.130.67)2023020627
a24-67.akam.net (2600:1480:9800::43)2023020627
a7-64.akam.net (23.61.199.64)2023020627
a7-64.akam.net (2600:1406:32::40)2023020627
a8-65.akam.net (2.16.40.65)2023020627
a8-65.akam.net (2600:1403:a::41)2023020627

Checks

  • ✓ Serial 2023020627 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 6m, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.renfe.es is one of the listed nameservers.
  • ✓ Contact dnsmaster@renfe.es #25
    The SOA RNAME dnsmaster.renfe.es means dnsmaster@renfe.es.
  • ✓ Date-based serial #26
    The serial 2023020627 follows the YYYYMMDDnn convention (2023-02-06).

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

14 records at the apex

Found

Read from
193.108.91.90:53
TypeValueTTL
SOAdns1.renfe.es. dnsmaster.renfe.es. 2023020627 3600 360 604800 300900
NSdns1.renfe.es.900
NSdns2.renfe.es.900
NSa24-67.akam.net.900
NSa1-90.akam.net.900
NSa22-66.akam.net.900
NSa13-65.akam.net.900
NSa7-64.akam.net.900
NSa8-65.akam.net.900
A213.144.49.50900
TXT"google-site-verification=RjfylyWMvpbPZcmWUURH8kmoucsx_sGMh4Be1zBzBEw"900
TXT"v=spf1 -all"900
TXT"infoblox-domain-mastery=84a0692bf7871bd6d687fe0ee17cfff4da7ed38446da9c9925cd4c244eed327299"900
TXT"facebook-domain-verification=kggxjjdg0rc1fiuha11s7d4skar3az"900

Checks

  • ✓ TTLs within range #32
    TTLs: A 15m, NS 15m. The NS TTL at the parent is 2d and in the zone 15m; 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.
  • 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