DNS audit for lassl.fr created on 2026-03-30 14:51:06

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1. Name servers

Name servers listed at the parent server d.nic.fr:

ns1.cleanoffices.pl
ns2.cleanoffices.pl
ns3.cleanoffices.pl
ns4.cleanoffices.pl

Result: 4 name servers found at the parent server (set at the domain provider).
Recommendation: Everything is okay. There is more than one name server added to lassl.fr.

2. NS records

NS records returned by each name server configured for the domain name

Frankfurt, DE San Francisco, US Johannesburg, ZA Singapore

ns1.cleanoffices.pl [46.170.184.7] (22ms):
ns1.lassl.fr
ns2.lassl.fr

ns2.cleanoffices.pl [46.170.184.7] (21ms):
ns1.lassl.fr
ns2.lassl.fr

ns3.cleanoffices.pl [46.170.184.7] (23ms):
ns1.lassl.fr
ns2.lassl.fr

ns4.cleanoffices.pl [46.170.184.7] (22ms):
ns1.lassl.fr
ns2.lassl.fr

ns1.cleanoffices.pl [46.170.184.7] (166ms):
ns1.lassl.fr
ns2.lassl.fr

ns2.cleanoffices.pl [46.170.184.7] (166ms):
ns1.lassl.fr
ns2.lassl.fr

ns3.cleanoffices.pl [46.170.184.7] (164ms):
ns1.lassl.fr
ns2.lassl.fr

ns4.cleanoffices.pl [46.170.184.7] (163ms):
ns1.lassl.fr
ns2.lassl.fr

ns1.cleanoffices.pl [46.170.184.7] (200ms):
ns1.lassl.fr
ns2.lassl.fr

ns2.cleanoffices.pl [46.170.184.7] (188ms):
ns1.lassl.fr
ns2.lassl.fr

ns3.cleanoffices.pl [46.170.184.7] (196ms):
ns1.lassl.fr
ns2.lassl.fr

ns4.cleanoffices.pl [46.170.184.7] (188ms):
ns1.lassl.fr
ns2.lassl.fr

ns1.cleanoffices.pl [46.170.184.7] (173ms):
ns1.lassl.fr
ns2.lassl.fr

ns2.cleanoffices.pl [] (time out 2000ms)

ns3.cleanoffices.pl [] (time out 2000ms)

ns4.cleanoffices.pl [] (time out 2000ms)

Result: The NS records returned by the DNS servers are not the same as the name servers set at the parent server.
Recommendation: Check the synchronization between the DNS servers. Returned NS records must be exactly the same as these returned by the parent server.

3. SOA record

SOA record returned by each name server configured for the domain name

Frankfurt, DE

ns1.cleanoffices.pl [46.170.184.7] (22ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns2.cleanoffices.pl [46.170.184.7] (22ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns3.cleanoffices.pl [46.170.184.7] (21ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns4.cleanoffices.pl [46.170.184.7] (21ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

San Francisco, US

ns1.cleanoffices.pl [46.170.184.7] (164ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns2.cleanoffices.pl [46.170.184.7] (164ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns3.cleanoffices.pl [46.170.184.7] (165ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns4.cleanoffices.pl [46.170.184.7] (163ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

Johannesburg, ZA

ns1.cleanoffices.pl [46.170.184.7] (196ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns2.cleanoffices.pl [46.170.184.7] (196ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns3.cleanoffices.pl [46.170.184.7] (196ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns4.cleanoffices.pl [46.170.184.7] (196ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

Singapore

ns1.cleanoffices.pl [46.170.184.7] (181ms):
ns1.lassl.fr. joseph\.kozubek.gmail.com. 2026032401 10800 3600 1209600 10800

ns2.cleanoffices.pl [] (time out 2000ms)

ns3.cleanoffices.pl [] (time out 2000ms)

ns4.cleanoffices.pl [] (time out 2000ms)

Result: The SOA record returned by the name servers is not the same on all of them.
Recommendation: Check the synchronization between the DNS servers. Returned SOA record must be exactly the same on all DNS servers.

4. A record distribution by location for lassl.fr

Shows how the name servers respond to requests for lassl.fr

Frankfurt, DE San Francisco, US Johannesburg, ZA Singapore

ns1.cleanoffices.pl [46.170.184.7] (21ms):
46.170.184.7

ns2.cleanoffices.pl [46.170.184.7] (22ms):
46.170.184.7

ns3.cleanoffices.pl [46.170.184.7] (22ms):
46.170.184.7

ns4.cleanoffices.pl [46.170.184.7] (22ms):
46.170.184.7

ns1.cleanoffices.pl [46.170.184.7] (164ms):
46.170.184.7

ns2.cleanoffices.pl [46.170.184.7] (164ms):
46.170.184.7

ns3.cleanoffices.pl [46.170.184.7] (164ms):
46.170.184.7

ns4.cleanoffices.pl [46.170.184.7] (165ms):
46.170.184.7

ns1.cleanoffices.pl [46.170.184.7] (204ms):
46.170.184.7

ns2.cleanoffices.pl [46.170.184.7] (188ms):
46.170.184.7

ns3.cleanoffices.pl [46.170.184.7] (188ms):
46.170.184.7

ns4.cleanoffices.pl [46.170.184.7] (196ms):
46.170.184.7

ns1.cleanoffices.pl [46.170.184.7] (183ms):
46.170.184.7

ns2.cleanoffices.pl [46.170.184.7] (185ms):
46.170.184.7

ns3.cleanoffices.pl [] (time out 2000ms)

ns4.cleanoffices.pl [46.170.184.7] (186ms):
46.170.184.7

5. A record distribution by location for www.lassl.fr

Shows how the name servers respond to requests for www.lassl.fr

Frankfurt, DE San Francisco, US Johannesburg, ZA Singapore

ns1.cleanoffices.pl [46.170.184.7] (22ms):
46.170.184.7

ns2.cleanoffices.pl [46.170.184.7] (21ms):
46.170.184.7

ns3.cleanoffices.pl [46.170.184.7] (21ms):
46.170.184.7

ns4.cleanoffices.pl [46.170.184.7] (22ms):
46.170.184.7

ns1.cleanoffices.pl [46.170.184.7] (163ms):
46.170.184.7

ns2.cleanoffices.pl [46.170.184.7] (164ms):
46.170.184.7

ns3.cleanoffices.pl [46.170.184.7] (164ms):
46.170.184.7

ns4.cleanoffices.pl [46.170.184.7] (165ms):
46.170.184.7

ns1.cleanoffices.pl [46.170.184.7] (188ms):
46.170.184.7

ns2.cleanoffices.pl [46.170.184.7] (196ms):
46.170.184.7

ns3.cleanoffices.pl [46.170.184.7] (188ms):
46.170.184.7

ns4.cleanoffices.pl [46.170.184.7] (192ms):
46.170.184.7

ns1.cleanoffices.pl [46.170.184.7] (182ms):
46.170.184.7

ns2.cleanoffices.pl [] (time out 2000ms)

ns3.cleanoffices.pl [] (time out 2000ms)

ns4.cleanoffices.pl [] (time out 2000ms)

6. Speed

Result: During the checks in the previous steps, multiple DNS requests were executed to the name servers responsible for the domain name. Average response time of the name servers is 367.92ms.
Recommendation: The name servers respond slow. Try moving to an Anycast DNS service in order to speed up the resolution of the domain name and first page load of the web site.

Previous reports for lassl.fr: 2026-01-30 20:42:56
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