support.cogentco.com - robtex.com
support.cogentco.com
cogentco.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:550:1::cc01🇺🇸 COGENT2001:550::/32 Cogent Communications | ||||||
| A | 38.100.128.10🇩🇪 COGENT38.0.0.0/8 Cogent | ||||||
| NS | auth1.dns.cogentco.com ⭐ | ||||||
| NS | auth2.dns.cogentco.com | ||||||
| MX | cogentco-com.mail.protection.outlook.com ⭐ | ||||||
| TXT | cisco-ci-domain-verification=563e6ea9960b89d45e298278ab2c8f2ed5c7bea8277648dd... | ||||||
| TXT | 2btc923933rlmtmu3eie8bpc65 | ||||||
| TXT | cofnduj090qcu5jbup8c39bovo | ||||||
| TXT | ZOOM_verify_6LoiHccIcBeiFmEkJmfiR4 | ||||||
| TXT | ifs3oocjo6h5920nr11c1325f9 | ||||||
| TXT | adobe-idp-site-verification=f26b18445e54e1e7da0ebc2c299a9f1c63820cf9ab98c8be8... | ||||||
| TXT | v=spf1 mx a:engtools.sys.cogentco.com a:mx1.cogentco.com a:mx2.cogentco.com a... | ||||||
| SOA | auth1.dns.cogentco.comdns@cogentco.com 2026-04-15 #8 | ||||||
rank #74497 globally
rank #32832 in the tld
WOT: SAFE (83/100)
📈 Tranco rank: #14,260
Same first word
Similar names
DNS History
11 records (1 active, 10 former)
○NSauth1.dns.cogentco.com2015-11-05 → 2017-02-15 · 4 obs
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
○NSauth2.dns.cogentco.com2015-11-05 → 2017-02-15 · 4 obs
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
○NSauth4.dns.cogentco.com2015-11-05 → 2017-02-15 · 4 obs
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
○NSauth5.dns.cogentco.com2015-11-05 → 2017-02-15 · 4 obs
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
○MXcogentco-com.mail.protection.outlook.com2015-11-05 → 2017-02-15 · 4 obs
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
○MXserver1.mail.cogentco.com2016-12-02 → 2017-02-15 · 5 obs
● 2016-12-02 00:48:42
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
○MXserver2.mail.cogentco.com2016-12-02 → 2017-02-15 · 5 obs
● 2016-12-02 00:48:42
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
○A2001:550:1::cc012015-06-26 → 2017-02-15 · 4 obs
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
○A38.100.128.102015-06-26 → 2017-02-15 · 4 obs
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
○CNAMEcogentco.com2015-11-05 → 2017-02-15 · 5 obs
● 2015-11-05 07:43:44
● 2017-02-15 14:05:38
○ 2017-07-02 19:36:34
○ 2026-04-19 21:56:40
●CNAMEwww.cogentco.com2015-06-26 → 2026-04-19 · 2 obs
● 2026-04-19 21:56:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | g.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net... | - |
| cogentco.com | auth1.dns.cogentco.com, auth2.dns.cogentco.com | 3 records |
✅ Authoritative Response
Server:66.28.0.14
NS records: auth1.dns.cogentco.com, auth2.dns.cogentco.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cogentco.com (unsigned zone)
⏱️ Timing
Total: 312ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| CNAME | 1 | www.cogentco.com |
📌 Glue Records Collected
Total: 3
In-bailiwick: 3 (auth1.dns.cogentco.com, auth1.dns.cogentco.com, auth2.dns.cogentco.com)
Analysis
IP Addresses
support.cogentco.com points to two IPs: 2001:550:1::cc01 and 38.100.128.10.
Other host names, for instance cable.net, cogent-sp.net, www.internetsupercarrier.com, cogentsp.com and www.support.psi.com share IP numbers with support.cogentco.com.
Name Servers
Two name servers auth1.dns.cogentco.com and auth2.dns.cogentco.com are delegated to support.cogentco.com.
support.cogentco.com uses the same name server configuration as other domains, such as 134.102.38.in-addr.arpa, 7.206.in-addr.arpa, 78.19.208.in-addr.arpa, 132.45.185.in-addr.arpa and sto02.atlas.cogentco.com.
support.cogentco.com at least partially shares name servers with other domains such as canadahealthinfoway.ca, 32.28.216.in-addr.arpa, theupsstorenow.com, 60.130.181.38.in-addr.arpa and cargoedge.com.
These name servers are often used together with nsa.ups.com, nsb.ups.com, cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net, shadowcat-i.ups.com, ns1.vodafone-ip.de, ns2.vodafone-ip.de, ns1.fnsi.net, ns2.fnsi.net and ns3.fnsi.net.
Host names with two IPs:
auth1.dns.cogentco.com points to 2001:550:1:a::d and 66.28.0.14.
auth2.dns.cogentco.com points to 2001:550:1:b::d and 66.28.0.30.
Mail Servers
support.cogentco.com is handled by a single mail server, cogentco-com.mail.protection.outlook.com.
The mail server setup for support.cogentco.com matches that of other domains, for instance cogentco.com.
cogentco-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c903::3, 2a01:111:f403:f804::2, 2a01:111:f403:f805::1, 2a01:111:f403:f90c::, 52.101.9.2, 52.101.11.10, 52.101.41.0 and 52.101.41.26.