skanska.com

Checked 22 October 2026, 10:43 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-04-21

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
21 April 1999
Last changed
17 April 2026
Expires
21 April 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
dns11.se.skanska.net, dns11.us.skanska.net, dns12.se.skanska.net, dns12.us.skanska.net, dns13.az.skanska.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 2027-04-21 #3
    The registration is valid until 2027-04-21 (180 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

dns11.se.skanska.net, dns11.us.skanska.net, dns12.se.skanska.net, dns12.us.skanska.net, dns13.az.skanska.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns11.se.skanska.net, dns11.us.skanska.net, dns12.se.skanska.net, dns12.us.skanska.net, dns13.az.skanska.net
NS in the zone
dns11.se.skanska.net, dns11.us.skanska.net, dns12.se.skanska.net, dns12.us.skanska.net, dns13.az.skanska.net
NameserverAddressesNetwork (AS)Glue
dns11.se.skanska.net144.57.128.132AS39052 SKANSKANET-AS - Skanska Sverige AB, SE-
dns11.us.skanska.net144.57.129.251AS39052 SKANSKANET-AS - Skanska Sverige AB, SE-
dns12.se.skanska.net144.57.128.133AS39052 SKANSKANET-AS - Skanska Sverige AB, SE-
dns12.us.skanska.net144.57.129.252AS39052 SKANSKANET-AS - Skanska Sverige AB, SE-
dns13.az.skanska.net13.80.7.137AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 5 nameservers #6
    Delegated to dns11.se.skanska.net, dns11.us.skanska.net, dns12.se.skanska.net, dns12.us.skanska.net, dns13.az.skanska.net.
  • ✓ 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 3 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS39052 (SKANSKANET-AS - Skanska Sverige AB, SE): 4 addresses; AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US): 1 address.
  • 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

5 of 5 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns11.se.skanska.net 144.57.128.132NOERROR, 39 ms, authoritativenoyes / yesrefused-
dns11.us.skanska.net 144.57.129.251NOERROR, 41 ms, authoritativenoyes / yesrefused-
dns12.se.skanska.net 144.57.128.133NOERROR, 42 ms, authoritativenoyes / yesrefused-
dns12.us.skanska.net 144.57.129.252NOERROR, 40 ms, authoritativenoyes / yesrefused-
dns13.az.skanska.net 13.80.7.137NOERROR, 12 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 2009082222 · primary dns11.se.skanska.net

Found

Primary (MNAME)
dns11.se.skanska.net
Contact (RNAME)
hostmaster.skanska.net
Serial
2009082222
Refresh / retry
10800 s / 3600 s
Expire
2592000 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
dns11.se.skanska.net (144.57.128.132)2009082222
dns11.us.skanska.net (144.57.129.251)2009082222
dns12.se.skanska.net (144.57.128.133)2009082222
dns12.us.skanska.net (144.57.129.252)2009082222
dns13.az.skanska.net (13.80.7.137)2009082222

Checks

  • ✓ Serial 2009082222 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 30d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns11.se.skanska.net is one of the listed nameservers.
  • ✓ Contact hostmaster@skanska.net #25
    The SOA RNAME hostmaster.skanska.net means hostmaster@skanska.net.
  • ✓ Date-based serial #26
    The serial 2009082222 follows the YYYYMMDDnn convention (2009-08-22).

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

30 records at the apex

Found

Read from
144.57.128.132:53
TypeValueTTL
SOAdns11.se.skanska.net. hostmaster.skanska.net. 2009082222 10800 3600 2592000 900300
NSdns13.az.skanska.net.300
NSdns11.se.skanska.net.300
NSdns12.se.skanska.net.300
NSdns11.us.skanska.net.300
NSdns12.us.skanska.net.300
A217.114.94.2300
MX0 skanska-com.mail.protection.outlook.com.600
TXT"_8ucj9fwgfbwi70uhdmoi4123e8f672t"300
TXT"v=spf1 include:_spfo365.skanska.com include:spf.skanska.net ip4:66.150.161.30 a:b.spf.service-now.com a:d.spf.service-now.com a:c.spf.service-now.com a:mail.prologsky.com include:_spf.salesforce.com include:_spf.qualtrics.com -all"300
TXT"docusign=0cbf4e65-55f9-4845-9020-272b1a450489"300
TXT"docusign=66a041cd-90fd-4c63-9b73-82cecd19a5b9"300
TXT"ciscocidomainverification=5ef5d1707fedbaa51a29aa5963afdc1e343d4fc7a98992a69db95402391f8385"300
TXT"4/8lTuMBXx5/8lj1ZD7gi0L0IAMH1iBzeVNU/oKXGEtL+zXaupTi+yPlJjQ4WHNiiVJ3P+KsrbVEP5EeSlipmA=="300
TXT"have-i-been-pwned-verification=500e7932fe8df794de99f33864800e8a"300
TXT"apple-domain-verification=E22b3BXYsd4rOTlq"300
TXT"intersight=b56d97359f9e5cf48ed87987b953268fe3b4b5bb85278cac07729c41915b7e08"300
TXT"onetrust-domain-verification=fee07d3681c44e46ab6e42372bdf1e4b"300
TXT"onetrust-domain-verification=3911ea1a82ef4b21bb660e33d03584dd"300
TXT"1jszmp733yltwrwgch1d83gc8q3p1vk3"300
TXT"gx18lzn688g9jmdwtzytmvsd0v7qwtjn"300
TXT"apple-domain-verification=tnoJ1YMCZpNVYpnw"300
TXT"mentimeter-5dd65296-0482-4129-9690-761602414458"300
TXT"bw=kUKv1Okxp6TFWjAPOB0NFUwuwsgmkjNdFc98SLVUAbAx"300
TXT"autodesk-domain-verification=5aA4Uv4le0b7K-iUPoID"300
TXT"_2025maohj2so9133w1m8tc4pt0ut4ae"300
TXT"_ca337sn5dauxt066zqfvaxoufizuiot"300
TXT"_trh41jscx8hjr9f4u0i8rws48kvbh2n"300
TXT"sprout-social-1362eba0-3bcc-42ff-9a95-62b210f0061c"300
TXT"google-site-verification=Vymjp66Y4jYfACVc_JSDesXKWYFcSgb2rELAAAI-iu4"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 10m, NS 5m. The NS TTL at the parent is 2d and in the zone 5m; 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