Domain report: mimecastprotect.com

Registration

info

.com generic · MarkMonitor Inc. · expires 2028-06-27

TLD: .com (generic)
ICANN policies apply: yes
Registrar: MarkMonitor Inc.
Registered: 27 June 2022
Last changed: 26 May 2026
Expires: 27 June 2028
Status: client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers: dns01.mimecast.com, dns02.mimecast.com, dns03.mimecast.com, dns04.mimecast.com
RDAP server: https://rdap.verisign.com/com/v1/

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 2028-06-27 #3

The registration is valid until 2028-06-27 (614 days).
✓ Transfer locked #4

Registry status: client delete prohibited, client transfer prohibited, client update prohibited.
✓ Registry and delegation match #5

The nameservers registered at the registry are the ones published in DNS.

warn

dns01.mimecast.com, dns02.mimecast.com, dns03.mimecast.com, dns04.mimecast.com

Parent zone: com
Delegation from: a.gtld-servers.net (192.5.6.30)
NS at the parent: dns01.mimecast.com, dns02.mimecast.com, dns03.mimecast.com, dns04.mimecast.com
NS in the zone: dns01.mimecast.com, dns02.mimecast.com, dns03.mimecast.com, dns04.mimecast.com

Nameserver	Addresses	Network (AS)	Glue
dns01.mimecast.com	185.58.87.12	AS42427 MIMECAST-UK - Mimecast Services Limited, GB	185.58.87.12
dns02.mimecast.com	205.139.110.125	AS3561 CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC, US	205.139.110.125
dns03.mimecast.com	195.130.217.24	AS42427 MIMECAST-UK - Mimecast Services Limited, GB	195.130.217.24
dns04.mimecast.com	170.10.128.103	AS30031 MIMECAST-US - Mimecast North America Inc, US	207.211.41.115

✓ 4 nameservers #6

Delegated to dns01.mimecast.com, dns02.mimecast.com, dns03.mimecast.com, dns04.mimecast.com.
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
!

Glue differs from the zone

The addresses at the parent (glue) differ from the addresses in the zone: dns04.mimecast.com (glue 207.211.41.115, zone 170.10.128.103). Update the glue at your registrar.

#8
✓ 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 4 IPv4 /24s and 0 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS30031 (MIMECAST-US - Mimecast North America Inc, US): 1 address; AS3561 (CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC, US): 1 address; AS42427 (MIMECAST-UK - Mimecast Services Limited, GB): 2 addresses.
i

All nameserver names under .com

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

pass

4 of 4 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns01.mimecast.com 185.58.87.12	NOERROR, 16 ms, authoritative	no	yes / yes	refused	-
dns02.mimecast.com 205.139.110.125	NOERROR, 78 ms, authoritative	no	yes / yes	refused	-
dns03.mimecast.com 195.130.217.24	NOERROR, 15 ms, authoritative	no	yes / yes	refused	-
dns04.mimecast.com 170.10.128.103	NOERROR, 90 ms, authoritative	no	yes / yes	refused	-

✓ 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.
✓ 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.

pass

serial 1792606176 · primary dns01.mimecast.com

✓ Serial 1792606176 everywhere #22

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

SOA refresh 3h, retry 15m, expire 7d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver dns01.mimecast.com is one of the listed nameservers.
✓ Contact root@mimecastprotect.com #25

The SOA RNAME root.mimecastprotect.com means root@mimecastprotect.com.
✓ Timestamp serial #26

The serial 1792606176 is a Unix timestamp (2026-10-21 18:09 UTC).

warn

Not signed

info

7 records at the apex

Type	Value	TTL
SOA	dns01.mimecast.com. root.mimecastprotect.com. 1792606176 10800 900 604800 86400	300
NS	dns01.mimecast.com.	300
NS	dns02.mimecast.com.	300
NS	dns04.mimecast.com.	300
NS	dns03.mimecast.com.	300
TXT	"_4eepspo0pyc2rccqk9s405rnmkyuz5h"	300
TXT	"_glws1y3l2j6gx2liou47r00sdo6lpnn"	300

✓ TTLs within range #32

TTLs: 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.
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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