sky.com

.com generic · MarkMonitor Inc. · expires 2027-06-17

Found

TLD

.com (generic)

ICANN policies apply

yes

Registrar

MarkMonitor Inc.

Registered

31 March 1988

Last changed

5 August 2019

Expires

17 June 2027

Status

client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited

Registry nameservers

edns1.ultradns.biz, edns1.ultradns.com, edns1.ultradns.net, edns1.ultradns.org, ns0.isp.sky.com, ns1.isp.sky.com

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 2027-06-17 #3

  The registration is valid until 2027-06-17 (238 days).
• ✓ Transfer locked #4

  Registry status: client delete prohibited, client transfer prohibited, client update 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.

edns1.ultradns.biz, edns1.ultradns.com, edns1.ultradns.net, edns1.ultradns.org, ns0.isp.sky.com, ns1.isp.sky.com

Found

Parent zone

com

Delegation from

a.gtld-servers.net (192.5.6.30)

NS at the parent

edns1.ultradns.biz, edns1.ultradns.com, edns1.ultradns.net, edns1.ultradns.org, ns0.isp.sky.com, ns1.isp.sky.com

NS in the zone

edns1.ultradns.biz, edns1.ultradns.com, edns1.ultradns.net, edns1.ultradns.org, ns0.isp.sky.com, ns1.isp.sky.com

Checks

• ✓ 6 nameservers #6

  Delegated to edns1.ultradns.biz, edns1.ultradns.com, edns1.ultradns.net, edns1.ultradns.org, ns0.isp.sky.com, ns1.isp.sky.com.
• ✓ 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: ns0.isp.sky.com, ns1.isp.sky.com.
• ✓ 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 5 IPv4 /24s and 4 IPv6 /48s.
• ✓ 2 autonomous systems #11

  The nameservers are spread over: AS12008 (VERCARA - Vercara, LLC, US): 8 addresses; AS5607 (BSKYB-BROADBAND-AS - Sky UK Limited, GB): 2 addresses.
• ✓ Nameserver names under 4 TLDs #12

  Nameserver names use the TLDs .biz, .com, .net, .org.
• i

  Partly IPv6

  These nameservers have no IPv6 address: ns0.isp.sky.com, ns1.isp.sky.com.

  #13

10 of 10 addresses answer authoritatively

Found

Checks

• ✓ All respond #14

  All 10 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: edns1.ultradns.biz: "UltraDNS Nameserver"; edns1.ultradns.com: "UltraDNS Nameserver"; edns1.ultradns.net: "UltraDNS Nameserver"; edns1.ultradns.org: "UltraDNS Nameserver"; ns0.isp.sky.com: "unavailable"; ns1.isp.sky.com: "unavailable".

  #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.

35 records at the apex

Found

Read from

204.74.67.1:53

Checks

• ✓ TTLs within range #32

  TTLs: A 1d, MX 1d, NS 1d. The NS TTL at the parent is 2d 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