Domain report: ispsystem.com

Registration

info

.com generic · Hosting Concepts B.V. d/b/a Registrar.eu · expires 2027-06-29

Found

TLD: .com (generic)
ICANN policies apply: yes
Registrar: Hosting Concepts B.V. d/b/a Registrar.eu
Registered: 29 June 2000
Last changed: 30 May 2026
Expires: 29 June 2027
Status: active
Registry nameservers: ns-1403.awsdns-47.org, ns-1960.awsdns-53.co.uk, ns-245.awsdns-30.com, ns-865.awsdns-44.net, ns1.ispsystem.net, ns2.ispsystem.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 2027-06-29 #3

The registration is valid until 2027-06-29 (250 days).
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

warn

ns-1403.awsdns-47.org, ns-1960.awsdns-53.co.uk, ns-245.awsdns-30.com, ns-865.awsdns-44.net, ns1.ispsystem.net, ns2.ispsystem.net

Found

Parent zone: com
Delegation from: a.gtld-servers.net (192.5.6.30)
NS at the parent: ns-1403.awsdns-47.org, ns-1960.awsdns-53.co.uk, ns-245.awsdns-30.com, ns-865.awsdns-44.net, ns1.ispsystem.net, ns2.ispsystem.net
NS in the zone: ns-1403.awsdns-47.org, ns-1960.awsdns-53.co.uk, ns-245.awsdns-30.com, ns-865.awsdns-44.net

Nameserver	Addresses	Network (AS)	Glue
ns-1403.awsdns-47.org	205.251.197.123 2600:9000:5305:7b00::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-1960.awsdns-53.co.uk	205.251.199.168 2600:9000:5307:a800::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-245.awsdns-30.com	205.251.192.245 2600:9000:5300:f500::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	205.251.192.245 2600:9000:5300:f500::1
ns-865.awsdns-44.net	205.251.195.97 2600:9000:5303:6100::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns1.ispsystem.net (parent only)	62.109.13.129	AS29182 RU-JSCIOT - JSC IOT, RU	-
ns2.ispsystem.net (parent only)	94.130.173.174	AS24940 HETZNER-AS - Hetzner Online GmbH, DE	-

Checks

✓ 6 nameservers #6

Delegated to ns-1403.awsdns-47.org, ns-1960.awsdns-53.co.uk, ns-245.awsdns-30.com, ns-865.awsdns-44.net, ns1.ispsystem.net, ns2.ispsystem.net.
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only at the parent: ns1.ispsystem.net, ns2.ispsystem.net. ns-1403.awsdns-47.org, ns-1960.awsdns-53.co.uk, ns-245.awsdns-30.com, ns-865.awsdns-44.net report NS ns-1403.awsdns-47.org ns-1960.awsdns-53.co.uk ns-245.awsdns-30.com ns-865.awsdns-44.net. ns1.ispsystem.net, ns2.ispsystem.net report NS ns1.ispsystem.net ns2.ispsystem.net.

#7
✓ 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 6 IPv4 /24s and 4 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 1 address; AS29182 (RU-JSCIOT - JSC IOT, RU): 1 address.
✓ Nameserver names under 4 TLDs #12

Nameserver names use the TLDs .com, .net, .org, .uk.
i

Partly IPv6

These nameservers have no IPv6 address: ns1.ispsystem.net, ns2.ispsystem.net.

#13

Nameservers

fail

10 of 10 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns-1403.awsdns-47.org 205.251.197.123	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-
ns-1403.awsdns-47.org 2600:9000:5305:7b00::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns-1960.awsdns-53.co.uk 205.251.199.168	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-1960.awsdns-53.co.uk 2600:9000:5307:a800::1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-245.awsdns-30.com 205.251.192.245	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-245.awsdns-30.com 2600:9000:5300:f500::1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-865.awsdns-44.net 205.251.195.97	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns-865.awsdns-44.net 2600:9000:5303:6100::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns1.ispsystem.net 62.109.13.129	NOERROR, 39 ms, authoritative	no	no / yes	refused	PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:33:43 by root@localhost)
ns2.ispsystem.net 94.130.173.174	NOERROR, 5 ms, authoritative	no	no / yes	refused	PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:33:43 by root@localhost)

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.
!

Software version disclosed

These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.ispsystem.net: "PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:33:43 by root@localhost)"; ns2.ispsystem.net: "PowerDNS Authoritative Server 4.9.17 (built Aug 5 2026 13:33:43 by root@localhost)". Hide or replace the version string.

#17
✓ Zone transfers refused #18

No nameserver allows a zone transfer to the public.
✗

No DNS over TCP

DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: ns1.ispsystem.net (62.109.13.129): dial tcp 62.109.13.129:53: connect: connection refused; ns2.ispsystem.net (94.130.173.174): dial tcp 94.130.173.174:53: connect: connection refused.

#19
✓ EDNS supported #20

All nameservers support EDNS(0).
✓ Public addresses #21

All nameserver addresses are publicly routable.

SOA

warn

serial 1 · primary ns-1403.awsdns-47.org

Found

Primary (MNAME): ns-1403.awsdns-47.org
Contact (RNAME): awsdns-hostmaster.amazon.com
Serial: 1
Refresh / retry: 7200 s / 900 s
Expire: 1209600 s
Negative TTL: 86400 s

Serial per nameserver

Nameserver	Serial
ns-1403.awsdns-47.org (205.251.197.123)	1
ns-1403.awsdns-47.org (2600:9000:5305:7b00::1)	1
ns-1960.awsdns-53.co.uk (205.251.199.168)	1
ns-1960.awsdns-53.co.uk (2600:9000:5307:a800::1)	1
ns-245.awsdns-30.com (205.251.192.245)	1
ns-245.awsdns-30.com (2600:9000:5300:f500::1)	1
ns-865.awsdns-44.net (205.251.195.97)	1
ns-865.awsdns-44.net (2600:9000:5303:6100::1)	1
ns1.ispsystem.net (62.109.13.129)	2026092502
ns2.ispsystem.net (94.130.173.174)	2026092502

Checks

!

Serials differ

The nameservers serve different versions of the zone: 1 on ns-1403.awsdns-47.org (205.251.197.123), ns-1403.awsdns-47.org (2600:9000:5305:7b00::1), ns-1960.awsdns-53.co.uk (205.251.199.168), ns-1960.awsdns-53.co.uk (2600:9000:5307:a800::1), ns-245.awsdns-30.com (205.251.192.245), ns-245.awsdns-30.com (2600:9000:5300:f500::1), ns-865.awsdns-44.net (205.251.195.97), ns-865.awsdns-44.net (2600:9000:5303:6100::1); 2026092502 on ns1.ispsystem.net (62.109.13.129), ns2.ispsystem.net (94.130.173.174). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.

#22
✓ Timers within recommendations #23

SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver ns-1403.awsdns-47.org is one of the listed nameservers.
✓ Contact awsdns-hostmaster@amazon.com #25

The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
✓ Counter serial #26

The serial 1 is a plain counter.

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

warn

25 records at the apex

Found

Read from: 205.251.197.123:53

Type	Value	TTL
SOA	ns-1403.awsdns-47.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400	900
NS	ns-1403.awsdns-47.org.	172800
NS	ns-1960.awsdns-53.co.uk.	172800
NS	ns-245.awsdns-30.com.	172800
NS	ns-865.awsdns-44.net.	172800
A	65.8.131.81	60
A	65.8.131.21	60
A	65.8.131.108	60
A	65.8.131.106	60
AAAA	2600:9000:208a:ae00:4:e8be:a600:93a1	60
AAAA	2600:9000:208a:2c00:4:e8be:a600:93a1	60
AAAA	2600:9000:208a:800:4:e8be:a600:93a1	60
AAAA	2600:9000:208a:d000:4:e8be:a600:93a1	60
AAAA	2600:9000:208a:4000:4:e8be:a600:93a1	60
AAAA	2600:9000:208a:5600:4:e8be:a600:93a1	60
AAAA	2600:9000:208a:7800:4:e8be:a600:93a1	60
AAAA	2600:9000:208a:e800:4:e8be:a600:93a1	60
MX	1 aspmx.l.google.com.	3600
MX	10 alt3.aspmx.l.google.com.	3600
MX	10 alt4.aspmx.l.google.com.	3600
MX	5 alt1.aspmx.l.google.com.	3600
MX	5 alt2.aspmx.l.google.com.	3600
TXT	"unione-validate-hash=6722b6d0eb0a620b594c4c8c735a79d8"	600
TXT	"v=spf1 include:_spf.google.com a ip4:185.63.189.130 ip4:62.109.21.210 ip4:188.120.225.156 ip4:185.146.158.7 ip4:138.199.211.104 ip6:2a01:4f8:1c1b:e30f::1 include:_spf.amocrmmail.com include:spf.mindbox.ru include:spf.unione.io -all"	600
TXT	"webinar-verification=ab72af3d2438cba1e7111811b1ce611c"	600

Checks

!

Very low TTLs

These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), AAAA (1m). Low TTLs are useful just before a planned change.

#32
✓ 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