mail.jcosp.com - robtex.com

mail.jcosp.com

CNAMEmail.gznewidc.com
CNAMEc2.icoremail.net
DNSSEC⚠️ Not signed
A240e:f7:4019:5f:0:10:13:237🇨🇳 CHINANET-BACKBONE240e:f6::/31 China Telecom (Zhejiang) Limited
A112.13.121.122🇨🇳 CMNET-Zhejiang-AP112.13.112.0/20 CMI (Customer Route)
A112.13.121.123🇨🇳 CMNET-Zhejiang-AP112.13.112.0/20 CMI (Customer Route)

jcosp.com

CNAMEwww-jcosp-com.258fuwu.com
DNSSEC⚠️ Not signed
A139.9.127.132🇨🇳 HWCSNET139.9.120.0/21 Huawei Clouds Shanghai Region

Previously MX for

jcosp.com

Same first word

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DNS History

2 records (1 active, 1 former)

201820192020202120222023202420252026A124.172.244.204CNAMEmail.gznewidc.com
○A124.172.244.2042017-11-05 → 2017-11-05 · 3 obs
● 2017-11-05 20:04:24
○ 2026-04-12 14:04:54
○ 2026-05-13 00:43:34
●CNAMEmail.gznewidc.com2026-04-12 → 2026-05-13 · 2 obs
● 2026-04-12 14:04:54
● 2026-05-13 00:43:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comf.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, l.gtld-servers.net...-
jcosp.comdns15.hichina.com, dns16.hichina.com18 records

✅ Authoritative Response

Server:120.76.107.42

NS records: dns15.hichina.com, dns16.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jcosp.com (unsigned zone)

⏱️ Timing

Total: 1257ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1mail.gznewidc.com

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns15.hichina.com, dns15.hichina.com, dns15.hichina.com...)

Analysis

IP Addresses

mail.jcosp.com points to three IPs: 240e:f7:4019:5f:0:10:13:237, 112.13.121.122 and 112.13.121.123.

Other host names, for instance c2.icoremail.net, share IP numbers with mail.jcosp.com.