Domain report: fh-bielefeld.de

Registration

info

.de country-code

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.
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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

info

dns-2.dfn.de, dns-3.dfn.de, dns1.fh-bielefeld.de

Nameserver	Addresses	Network (AS)	Glue
dns-2.dfn.de	193.174.75.54 2001:638:d:b102::1	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	-
dns-3.dfn.de	193.174.75.58 2001:638:d:b103::1	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	-
dns1.fh-bielefeld.de	212.201.138.32	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	212.201.138.32

✓ 3 nameservers #6

Delegated to dns-2.dfn.de, dns-3.dfn.de, dns1.fh-bielefeld.de.
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
✓ Glue present and correct #8

Glue is published for the nameservers inside the zone: dns1.fh-bielefeld.de.
✓ All names resolve #9

Every nameserver name has an address and is not an alias.
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One address family in one network

all IPv6 addresses are in 2001:638:d::/48, while the other address family is spread over several networks.

#10
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All nameservers in one AS

All nameserver addresses are announced by one network operator (AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE): 5 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
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All nameserver names under .de

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
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Partly IPv6

These nameservers have no IPv6 address: dns1.fh-bielefeld.de.

#13

info

5 of 5 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns-2.dfn.de 193.174.75.54	NOERROR, 7 ms, authoritative	no	yes / yes	refused	0
dns-2.dfn.de 2001:638:d:b102::1	NOERROR, 7 ms, authoritative	no	yes / yes	refused	0
dns-3.dfn.de 193.174.75.58	NOERROR, 10 ms, authoritative	no	yes / yes	refused	0
dns-3.dfn.de 2001:638:d:b103::1	NOERROR, 8 ms, authoritative	no	yes / yes	refused	0
dns1.fh-bielefeld.de 212.201.138.32	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-

✓ All respond #14

All 5 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.
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Identifying string disclosed

These nameservers answer version queries with a string that is not a version number: dns-2.dfn.de: "0"; dns-3.dfn.de: "0".

#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.

pass

serial 2015063474 · primary dns1.fh-bielefeld.de

✓ Serial 2015063474 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 4h, retry 1h, expire 28d, negative TTL 15m.
✓ Primary is a public nameserver #24

The primary nameserver dns1.fh-bielefeld.de is one of the listed nameservers.
✓ Contact dns-master@hsbi.de #25

The SOA RNAME dns-master.hsbi.de means dns-master@hsbi.de.
✓ Timestamp serial #26

The serial 2015063474 is a Unix timestamp (2033-11-08 11:51 UTC).

warn

Not signed

info

17 records at the apex

Type	Value	TTL
SOA	dns1.fh-bielefeld.de. dns-master.hsbi.de. 2015063474 14400 3600 2419200 900	86400
NS	dns-3.dfn.de.	86400
NS	dns-2.dfn.de.	86400
NS	dns1.fh-bielefeld.de.	86400
A	212.201.138.18	86400
MX	50 b2631.mx.srv.dfn.de.	3600
MX	50 c2631.mx.srv.dfn.de.	3600
MX	50 a2631.mx.srv.dfn.de.	3600
TXT	"v=spf1 ip4:129.70.4.0/24 ip4:129.70.204.0/24 ip4:129.70.208.0/24 ip4:129.70.43.192/26 include:_spf.o263.mx.srv.dfn.de ?all"	3600
TXT	"ZOOM_verify_nAB-PO3PRqaviTf1t4wMqw"	3600
TXT	"MS=ms66006327"	3600
TXT	"HARICA-cmbYcDXPeBFFCPufBRU"	3600
TXT	"MS=C67180A4E7910A448569700A0AFA7DB4FC5881C0"	3600
TXT	"adobe-idp-site-verification=9b739008c69c689ef2551fc1bbf52e1005b284057292834acd7b406c5e44e470"	3600
TXT	"apple-domain-verification=lhBaI4em8KB0ZJi3"	3600
TXT	"sophos-domain-verification=7e35cf47a5b1083b79b0877151c784481f16d077ffeeab0e5eae1c5251ec66cb"	3600
TXT	"cisco-ci-domain-verification=7fa99f80c200d674cd174f1b38b2c3cb1c4d45e5b09429e19efe0c058171d411"	3600