tui.nl

Checked 21 October 2026, 21:26 UTC · via 8.8.8.8
!Passed with warnings
23 passed 1 warning 0 failed 7 info

Registration

info

.nl country-code · Key-Systems GmbH

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Key-Systems GmbH
Registered
13 October 1996
Last changed
8 June 2026
Status
active
Registry nameservers
ns01.brandshelter.com, ns02.brandshelter.net
RDAP server
https://rdap.sidn.nl/

Checks

  • i
    .nl 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
    .nl is delegated in the root zone and DNSSEC-signed.
  • i
    Expiry date not published
    The registry does not publish the expiry date in RDAP. Check it with your registrar.
    #3
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns01.brandshelter.com, ns02.brandshelter.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns01.brandshelter.com, ns02.brandshelter.net
NS in the zone
ns01.brandshelter.com, ns02.brandshelter.net
NameserverAddressesNetwork (AS)Glue
ns01.brandshelter.com193.227.117.15 2a04:2b00:14cc::15AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns02.brandshelter.net194.50.187.16 2a04:2b00:14dd::16AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns01.brandshelter.com, ns02.brandshelter.net.
    #6
  • ✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 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 .com, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns01.brandshelter.com 193.227.117.15NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns01.brandshelter.com 2a04:2b00:14cc::15NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns02.brandshelter.net 194.50.187.16NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
ns02.brandshelter.net 2a04:2b00:14dd::16NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1

Checks

  • ✓ All respond #14
    All 4 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns01.brandshelter.com: "RcodeZero DNS"; ns02.brandshelter.net: "reg-wie1".
    #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 2026100700 · primary ns01.brandshelter.com

Found

Primary (MNAME)
ns01.brandshelter.com
Contact (RNAME)
tech.brandshelter.com
Serial
2026100700
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns01.brandshelter.com (193.227.117.15)2026100700
ns01.brandshelter.com (2a04:2b00:14cc::15)2026100700
ns02.brandshelter.net (194.50.187.16)2026100700
ns02.brandshelter.net (2a04:2b00:14dd::16)2026100700

Checks

  • ✓ Serial 2026100700 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns01.brandshelter.com is one of the listed nameservers.
  • ✓ Contact tech@brandshelter.com #25
    The SOA RNAME tech.brandshelter.com means tech@brandshelter.com.
  • ✓ Date-based serial #26
    The serial 2026100700 follows the YYYYMMDDnn convention (2026-10-07).

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

112 records at the apex

Found

Read from
193.227.117.15:53
TypeValueTTL
SOAns01.brandshelter.com. tech.brandshelter.com. 2026100700 10800 3600 604800 300300
NSns01.brandshelter.com.3600
NSns02.brandshelter.net.3600
A88.221.24.120300
MX4 tui-nl.mail.protection.outlook.com.300
TXT"amazones.com"3600
TXT"MS=ms27247131"3600
TXT"0hj37jmn27mdpkprgr72zstytt221z6s"3600
TXT"3khqzlxbltfjs20n9gz6zywkpd3m24wt"3600
TXT"3m0mpgbnzs13fynlfmgkzq9nsr5pg2ql"3600
TXT"41vzxb9msqg30n496qgyf8tf2g2hwcnx"3600
TXT"5qb5ypvwcxvmpw2ys7qlsz99n4tvhc6h"3600
TXT"63b9ml4bn1bmjqb05k5ynnjhs5p9w139"3600
TXT"68tl5j67pc5ytn629xfxbk2n9z83c6wg"3600
TXT"69ymqyr4y2bq2hcqy785lv9yxdmdsrfg"3600
TXT"6csbjm3lgcw0pcvt6749ljb9ym90nm7j"3600
TXT"6qztbj7h9xmtqt7hkvbrnjx38kbzggdm"3600
TXT"7r7d3wf1jyprl7j3mn781z6mbjl7pyrt"3600
TXT"_0ofw45z527yqjsky6nn8gwmxgykyw3f"3600
TXT"_1duv8bgtou1yc85zh0loij2458fxtbk"3600
TXT"_20knzhnqsqwy1xojlap8ftdukx2osis"3600
TXT"_24k0ket6t8rjqpyxwvh4qxtalp62s8n"3600
TXT"_2bbgmhye3pzjuac3vg3a214ww6oxbff"3600
TXT"_2wmlf86h9i8tumeomz9jovx6or9fv1s"3600
TXT"_39ljzcm3mt1nx2gmp9aa536agqqn733"3600
TXT"_3vmcrd43ydn0y2m314edtsy6sq75czf"3600
TXT"_5e9ckhrqp51gcpe3p54gu79868qu4a6"3600
TXT"_6xqooycejyt9ytyjzgj5eabvpcjmlpf"3600
TXT"_7ekra6h7mac65sf0unv2u7vg0tmkh9e"3600
TXT"_7ri5us39xut7d94bm9a9kwqu752maha"3600
TXT"_8czya1du99lx6mmx84nwlru24mo1h4s"3600
TXT"_8efjw5ap8sxwx03y9el3mxxke5mq7ft"3600
TXT"_bdf2veuuqx26mc4l11gmmq40r3zdln3"3600
TXT"_dgxrz5hrnmv9egjyu2xsv2rj02mjv2s"3600
TXT"_edi819738brfvfgpb8kfbvqwif1tiw5"3600
TXT"_eze2yc4wbp3rpup4nborwaktxco33z3"3600
TXT"_f2k645fojj2ghnstnhh4lnk8u6783nu"3600
TXT"_grf8emyiwy0n1czeo2og5u3gilh0vpt"3600
TXT"_i7wprv7p6ks53bjetrhq8jz0jq5okff"3600
TXT"_iefdcwdkeo9wpm7hw68rzl3dj6u3swj"3600
TXT"_iupzt8bjpadkkvmra7v418gta9wy21q"3600
TXT"_jro0lye8woucbtcklklxd4n435bozrp"3600
TXT"_jzjmcxacxtgkjssmwo5gbbwrcs4rha6"3600
TXT"_l4l6fzs8h4hwmj00466ap04b5td9ywu"3600
TXT"_lib2pnpwxoboa4khbmbl83oww9is2gu"3600
TXT"_lli1e6hm6d8cyftqobln7adlc02z75u"3600
TXT"_ln89osn7gx0g1ptw3pq3grvarq1c98v"3600
TXT"_lt2gp4kzc4nloa1ip09i8isqmtgor3z"3600
TXT"_m7vuxrfpg9cczrptfnl0w2ny75us7sl"3600
TXT"_n2wkflpu37spsx3xvp2knscyj95sf1x"3600
TXT"_o6aj67kr6ccnj6ak5bh1yl4rff80271"3600
TXT"_ou6xa46piriain4esl4vv34hdyjwql5"3600
TXT"_q3wknau9cw5wr7qdj34w8wwm5fz75m5"3600
TXT"_qhzcw8a36rbop68w1fjbve3ayzaq0iz"3600
TXT"_reiuxtytoyj2fr0r2nesuo3fcy2tpnw"3600
TXT"_tubuori8dybrskhelqqxuhvzzr6ednq"3600
TXT"_uxxopcw9rkps8zg4ebp4x2x9e96cvlg"3600
TXT"_v4uvac2epo6y5mbxmkkk502d1gzo1uy"3600
TXT"_v80mujql4ornla2j5b13m19alc820og"3600
TXT"_v9i4nunm1h909udxundi88m9mc2w7qy"3600
TXT"_vq6chk74pvqab28oiiga6ecuavtvba6"3600
TXT"_w9e7dxch0ckkh27e7128s9sn3v0fehg"3600
TXT"_wu6b777hfbt7oo6w5kvv23u1u9h5k83"3600
TXT"_wxlzz00gtt0px196ioz00s3k2ycg1a7"3600
TXT"_yqyq19af564razgdmo7bnsl5tejjweq"3600
TXT"_zxczofazi6x8tkgmy9f36teadyf5xyt"3600
TXT"bdvchzm7slq0pb93sk1vd4j2tbfz958g"3600
TXT"bnp3pvvp80yzyj4qpjwl86f63k6fbdhv"3600
TXT"c5s7ky29h7p2pvztzzfvj54fksrbvp0m"3600
TXT"cftmc0kqxz7vtbt40fx672ncl3tyq6fp"3600
TXT"d0hrgg5j4j0vyrxtpms9f8f90fpl1cgj"3600
TXT"g0h1dg5s4jgbj6lxgbd6k5tpksrlccnh"3600
TXT"hhj0pggvm9mrhqvtcm92bmljx9skmdrl"3600
TXT"jmhnzn2vfqrmfshbvdr7f907vzjbx4p4"3600
TXT"k2bkcmw8w5s59ltgsclqtc2fx9n57mkk"3600
TXT"ksr2pc555c4frj9ytdznptbzrjt3d46t"3600
TXT"lgr57q5kw47465wvnqj7cqm93tvgkfbr"3600
TXT"lm7rkypxtv9pxnl528tmfmj7h885rbfy"3600
TXT"mtbbv75z0qvwjd3z41dg7wc5ndfgtxs2"3600
TXT"n46hh6llhcgdhfdrd08tc89vj5y7l38w"3600
TXT"q82d7f325fplvm9vt46ll4zv617m1qp4"3600
TXT"qrjjx905x5xmvrzz2g41pxq0g5lqzrmd"3600
TXT"rbl5y6jlytpy716d9wn6xfl8hnrj3911"3600
TXT"rbszk20c4ybvq7vm3g0nk328xrhl31kf"3600
TXT"rxwx31tcqnp1x40cbh204bsffzy08tb7"3600
TXT"s9fywmr19d8pm5vkvjtcqrm4z744bw3m"3600
TXT"scvs561lmfsgzl5s10w8ff9cw8rkh099"3600
TXT"vhc3058rymlf2hw02d0gn9cjjgjqblg1"3600
TXT"vhttznz1x0wrbyv4y0lwhtjb14phbyhj"3600
TXT"vw220xwmdm26n0072pcwxg9000g71pnm"3600
TXT"xwzv1sz1vvpjbvlnycz04lfcddxt1n1l"3600
TXT"yhqctxrtyzldn1ctvbygky0d89d53cz4"3600
TXT"z4t32lp4r1w3n9fj7l587n116fcp8601"3600
TXT"zlzr74fh0qnswd2sr1d0db5q0wvmrg3b"3600
TXT"_32bq5a3tixs86yxe1migpwhzskwoyh5)"3600
TXT"apple-domain-verification=yc4rpvBOXJn3w1oD"3600
TXT"google-gws-recovery-domain-verification=57463634"3600
TXT"google-gws-recovery-domain-verification=61559089"3600
TXT"airtable-verification=8d1e3b312949eac94497888ffe7aa2bc"3600
TXT"miro-verification=19616033581ca8585181da321ac5356c3758cec8"3600
TXT"teamviewer-sso-verification=468671ca187147508efb398f7cecf81e"3600
TXT"anthropic-domain-verification-0ekkq0=uX5B00mjBFTZF2n57MmlmvEwW"3600
TXT"google-site-verification=KU_zqth_M6Q-TkxuNJup17HMsMWOYZdFDTMoVICZy-M"3600
TXT"google-site-verification=VgFLZZAVVjtuQDB7QrfMCEvxzwTBsYyK_6oyTyAH-dI"3600
TXT"google-site-verification=npLGsaPFQgc2EwvT7ZCe40kwbAL1wSi-VZz9YGKaY7M"3600
TXT"google-site-verification=o3ovke1tybD5zFmkRW5qsVW4ITqDpQUblsdAOoYoDBo"3600
TXT"google-site-verification=q2AbwHvoYBqhz0TyypA4FoNBqQTf0mzXLwMHSherawM"3600
TXT"B0r1tCfJ/uQWkn3XrArfGngDJ8C1gp1u7TiOAJgQzJBkc2nBGe+fKdgdga+WwE9nVVwbF7XwwI6JWvdgoKcIqw=="3600
TXT"IaM0qAFuiEL1CN4vyWbcgj13WUAkNt6CZEBmZVXBlS2p6CqRpkeO65z0/PM/Sqts1bHzFIcxTkqduBclCyMSjg=="3600
TXT"atlassian-domain-verification=BEWaryJcTKKKN4y5DTRjGgVTy12n8Sb5CWSNUMjyZ1aut8P4dkknLfvTyLPPxsUB"3600
TXT"atlassian-domain-verification=R0oe1j5MVuzOqdKW4yS4wJmPYVBXwvWD38S4aubDDMd1ajs310cWJWYxGdEDvkUt"3600
TXT"v=spf1 mx ip4:195.128.186.14 ip4:62.48.75.148 ip4:62.48.75.199 ip4:85.214.194.139 ip4:85.214.149.64 ip4:135.181.222.110 ip4:195.128.186.30 ip4:195.128.187.11 ip4:85.115.54.190 a:cluster-e.mailcontrol.com include:spf.protection.outlook.com include:spf1.f" "adiro.com include:spf.formdesk.com include:_spf.salesforce.com ip4:62.154.143.6/32 -all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 1h.
  • ✓ 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