polytech-lille.fr

Checked 22 October 2026, 04:51 UTC · via 8.8.8.8
✗Problems found
20 passed 5 warnings 2 failed 4 info

Registration

info

.fr country-code · GANDI · expires 2033-05-12

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
GANDI
Registered
8 September 2002
Last changed
2 February 2026
Expires
12 May 2033
Status
client transfer prohibited
Registry nameservers
beuvry.escaut.net, buzz.polytech-lille.org
RDAP server
https://rdap.nic.fr/

Checks

  • i
    .fr 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
    .fr is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2033-05-12 #3
    The registration is valid until 2033-05-12 (2394 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

beuvry.escaut.net, buzz.polytech-lille.org

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
beuvry.escaut.net, buzz.polytech-lille.org
NS in the zone
beuvry.escaut.net, buzz.polytech-lille.org, etch.polytech-lille.org, slink.polytech-lille.org
NameserverAddressesNetwork (AS)Glue
beuvry.escaut.net193.48.57.48AS2200 FR-RENATER - Renater, FR-
buzz.polytech-lille.org193.48.57.33AS2200 FR-RENATER - Renater, FR-
etch.polytech-lille.org (zone only)193.48.57.7AS2200 FR-RENATER - Renater, FR-
slink.polytech-lille.org (zone only)193.48.57.3AS2200 FR-RENATER - Renater, FR-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: beuvry.escaut.net, buzz.polytech-lille.org.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: etch.polytech-lille.org, slink.polytech-lille.org. beuvry.escaut.net, buzz.polytech-lille.org report NS beuvry.escaut.net buzz.polytech-lille.org etch.polytech-lille.org slink.polytech-lille.org.
    #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 one network
    all IPv4 addresses are in 193.48.57.0/24. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS2200 (FR-RENATER - Renater, FR): 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 .net, .org.
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

fail

2 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
beuvry.escaut.net 193.48.57.48NOERROR, 21 ms, authoritativenoyes / yesrefused9.18.49-1~deb12u2-Debian
buzz.polytech-lille.org 193.48.57.33NOERROR, 16 ms, authoritativenono / yesrefused9.18.49-1~deb12u2-Debian
etch.polytech-lille.org 193.48.57.7no responsenono / no--
slink.polytech-lille.org 193.48.57.3no responsenono / no--

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: etch.polytech-lille.org (193.48.57.7): read udp 46.225.38.91:33323->193.48.57.7:53: i/o timeout; slink.polytech-lille.org (193.48.57.3): read udp 46.225.38.91:52067->193.48.57.3:53: 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: beuvry.escaut.net: "9.18.49-1~deb12u2-Debian"; buzz.polytech-lille.org: "9.18.49-1~deb12u2-Debian". Hide or replace the version string.
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: buzz.polytech-lille.org (193.48.57.33): dial tcp 193.48.57.33:53: i/o timeout.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 3992590546 · primary beuvry.escaut.net

Found

Primary (MNAME)
beuvry.escaut.net
Contact (RNAME)
postmaster.beuvry.escaut.net
Serial
3992590546
Refresh / retry
7200 s / 3600 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
beuvry.escaut.net (193.48.57.48)3992590546
buzz.polytech-lille.org (193.48.57.33)3992590546

Checks

  • ✓ Serial 3992590546 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 1h, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver beuvry.escaut.net is one of the listed nameservers.
  • ✓ Contact postmaster@beuvry.escaut.net #25
    The SOA RNAME postmaster.beuvry.escaut.net means postmaster@beuvry.escaut.net.
  • ✓ Timestamp serial #26
    The serial 3992590546 is a Unix timestamp (2096-07-08 12:55 UTC).

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

8 records at the apex

Found

Read from
193.48.57.48:53
TypeValueTTL
SOAbeuvry.escaut.net. postmaster.beuvry.escaut.net. 3992590546 7200 3600 1209600 8640086400
NSetch.polytech-lille.org.86400
NSbeuvry.escaut.net.86400
NSbuzz.polytech-lille.org.86400
NSslink.polytech-lille.org.86400
A193.48.57.5686400
MX50 woody.polytech-lille.org.86400
TXT"v=spf1 mx ip4:193.48.57.26 ip4:193.48.57.36 ?include:univ-lille.fr mx:polytech-reseau.org -all"86400

Checks

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