firstclass.com - dns.ninja
firstclass.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 205.211.178.221🇨🇦 AS16751205.211.178.0/24 Added on behalf of the customer | ||||||
| PTR | mail.firstclass.com | ||||||
| NS | ns.softarc.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 205.211.178.224🇨🇦 AS16751205.211.178.0/24 Added on behalf of the customer | ||||||
| NS | ns.firstclass.com ⚠️ Not in zone NS records | ||||||
| A | 205.211.178.224🇨🇦 AS16751205.211.178.0/24 Added on behalf of the customer | ||||||
| NS | proxy.firstclass.com | ||||||
| A | 205.211.178.223🇨🇦 AS16751205.211.178.0/24 Added on behalf of the customer | ||||||
| MX | mxa-00102601.gslb.pphosted.com ⭐ | ||||||
| A | 67.231.152.222🇺🇸 Proofpoint67.231.152.0/24 Inc. | ||||||
| PTR | mx0b-00102601.pphosted.com | ||||||
| MX | mxb-00102601.gslb.pphosted.com ⭐ | ||||||
| A | 67.231.144.228🇺🇸 Proofpoint67.231.144.0/24 Inc. | ||||||
| PTR | mx0a-00102601.pphosted.com | ||||||
| TXT | v=spf1 ip4:205.211.178.221 ~all | ||||||
| TXT | MS=ms72633469 | ||||||
| SOA | ns.softarc.compostmaster@softarc.com serial=515 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1780545139 | ||||||
rank #318133 in the tld
WOT: SAFE (88/100)
Subdomains
activesync.firstclass.com |
updates.firstclass.com |
proxy.firstclass.com |
mail.firstclass.com |
intl.firstclass.com |
www.firstclass.com |
coolstuff.firstclass.com |
www3.firstclass.com |
fcws.firstclass.com |
ns.firstclass.com |
fcol.firstclass.com |
user.firstclass.com |
Same first word
Similar names
DNS History
12 records (6 active, 6 former)
●NSns.firstclass.com2026-02-14 → 2026-06-04 · 3 obs
● 2026-02-14 20:31:44
● 2026-06-04 04:17:12
●NSns.softarc.com2015-08-31 → 2026-06-04 · 2 obs
● 2026-06-04 04:17:12
○NSns.uunet.ca2015-08-31 → 2019-01-29 · 4 obs
● 2019-01-29 22:13:16
○ 2026-02-14 20:31:44
○ 2026-06-04 04:17:12
●NSproxy.firstclass.com2018-08-30 → 2026-06-04 · 7 obs
● 2018-08-30 05:16:56
● 2018-10-17 08:35:54
○ 2018-12-08 23:34:50
○ 2019-01-29 22:13:16
● 2026-02-14 20:31:44
● 2026-06-04 04:17:12
○MXes01.firstclass.com2017-07-23 → 2019-01-29 · 5 obs
● 2017-07-23 16:27:28
● 2019-01-29 22:13:16
○ 2026-02-14 20:31:44
○ 2026-06-04 04:17:12
○MXes02.firstclass.com2017-07-23 → 2019-01-29 · 5 obs
● 2017-07-23 16:27:28
● 2019-01-29 22:13:16
○ 2026-02-14 20:31:44
○ 2026-06-04 04:17:12
○MXmail.firstclass.com2015-08-31 → 2017-07-17 · 4 obs
● 2017-07-17 03:38:06
○ 2017-07-23 16:27:28
○ 2026-06-04 04:17:12
●MXmxa-00102601.gslb.pphosted.com2026-02-14 → 2026-06-04 · 3 obs
● 2026-02-14 20:31:44
● 2026-06-04 04:17:12
●MXmxb-00102601.gslb.pphosted.com2026-02-14 → 2026-06-04 · 3 obs
● 2026-02-14 20:31:44
● 2026-06-04 04:17:12
○A142.75.67.2122017-07-17 → 2019-01-29 · 5 obs
● 2017-07-17 03:28:14
● 2019-01-29 22:13:16
○ 2026-02-14 20:31:44
○ 2026-06-04 04:17:12
○A192.168.137.122015-08-31 → 2017-07-11 · 4 obs
● 2017-07-11 09:57:18
○ 2017-07-17 03:28:14
○ 2026-06-04 04:17:12
●A205.211.178.2212026-02-14 → 2026-06-04 · 3 obs
● 2026-02-14 20:31:44
● 2026-06-04 04:17:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| firstclass.com | ns.firstclass.com, proxy.firstclass.com | 2 records |
✅ Authoritative Response
Server:205.211.178.224
NS records: ns.firstclass.com, proxy.firstclass.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for firstclass.com (unsigned zone)
⏱️ Timing
Total: 263ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 205.211.178.221 |
| NS | 2 | proxy.firstclass.com, ns.softarc.com |
| MX | 2 | mxb-00102601.gslb.pphosted.com (pri: 10), mxa-00102601.gslb.pphosted.com (pri: 10) |
| TXT | 2 | v=spf1 ip4:205.211.178.221 ~all, MS=ms72633469 |
| SOA | 1 | ns.softarc.com postmaster.softarc.com |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (ns.firstclass.com, proxy.firstclass.com)
Analysis
Hierarchy
firstclass.com serves as parent to activesync.firstclass.com, updates.firstclass.com, proxy.firstclass.com, mail.firstclass.com, intl.firstclass.com along with a few other host names.
IP Addresses
firstclass.com has exactly one IP address — 205.211.178.221.
Other host names, for instance mail.firstclass.com, mail.softarc.com and www.firstclass.com share IP numbers with firstclass.com.
Name Servers
The authoritative name servers for firstclass.com are ns.firstclass.com, proxy.firstclass.com and ns.softarc.com — three in total.
firstclass.com has a partial name server overlap with other domains — among them intl.firstclass.com and softarc.com.
It is common to find these name servers paired with the name servers proxy.softarc.com.
ns.firstclass.com and ns.softarc.com both resolve to 205.211.178.224, while proxy.firstclass.com resolves to 205.211.178.223. All three hostnames map to exactly one IP address each.
Both ns.firstclass.com and ns.softarc.com resolve to 205.211.178.224 IP addresses each.
Mail Servers
firstclass.com uses two mail servers, mxa-00102601.gslb.pphosted.com and mxb-00102601.gslb.pphosted.com.
The mail server setup of firstclass.com matches that of other domains such as erado.com, interchange.com.br, thefaxguys.com and two others.
At least some of the mail servers used by firstclass.com are shared with other domains: wwteam.com, b2bscene.com, b2bscene.net and two others among them.
These mail servers tend to be used in conjunction with the mail servers smtp.b2bscene.com.
mxa-00102601.gslb.pphosted.com directs to 67.231.152.222 and mxb-00102601.gslb.pphosted.com directs to 67.231.144.228; each host name points to exactly one IP number.