firstline.co.jp - robtex.com

firstline.co.jp

DNSSEC⚠️ Not signed
A112.78.125.48🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww548b.sakura.ne.jp
NSmaster.dns.ne.jp ⭐
A210.224.172.18🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRmaster.dns.ne.jp
NSns1.dns.ne.jp
A61.211.236.1🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRns1.dns.ne.jp
NSns2.dns.ne.jp
A133.167.21.1🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan
PTRns2.dns.ne.jp
MXfirstline.co.jp ⭐
A112.78.125.48🇯🇵 SAKURA-C112.78.112.0/20 (4/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRwww548b.sakura.ne.jp
TXTv=spf1 a:www548b.sakura.ne.jp mx ~all
SOAmaster.dns.ne.jptech@sakura.ad.jp 2023-05-02 #17

co.jp

DNSSEC⚠️ Not signed
TXTco.jp.
WOT: SAFE (58/100)

MX for

firstline.co.jp

Same first word

firstline.com.ua
firstline.com
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firstline.com.my
firstline.org.il
firstline.ie
firstline.lu
firstline.parts
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Similar names

sliterfin.com
linefirst.ru
firstlien.com
linefirst.com
sinfilter.com
firstlein.com
fitliners.de
fitliners.com
insfilter.com

DNS History

5 records (5 active, 0 former)

NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpMXfirstline.co.jpA112.78.125.48
●NSmaster.dns.ne.jp2026-04-08 → 2026-04-13 · 2 obs
● 2026-04-08 13:11:10
● 2026-04-13 09:07:38
●NSns1.dns.ne.jp2026-04-08 → 2026-04-13 · 2 obs
● 2026-04-08 13:11:10
● 2026-04-13 09:07:38
●NSns2.dns.ne.jp2026-04-08 → 2026-04-13 · 2 obs
● 2026-04-08 13:11:10
● 2026-04-13 09:07:38
●MXfirstline.co.jp2026-04-08 → 2026-04-13 · 2 obs
● 2026-04-08 13:11:10
● 2026-04-13 09:07:38
●A112.78.125.482026-04-08 → 2026-04-13 · 2 obs
● 2026-04-08 13:11:10
● 2026-04-13 09:07:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jph.dns.jp, e.dns.jp, d.dns.jp, f.dns.jp...-
firstline.co.jpns1.dns.ne.jp, ns2.dns.ne.jp2 records

✅ Authoritative Response

Server:61.211.236.1

NS records: ns1.dns.ne.jp, ns2.dns.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstline.co.jp (unsigned zone)

⏱️ Timing

Total: 1851ms | Queries: -

📄 Records

TypeCountSample Data
A1112.78.125.48
NS2ns2.dns.ne.jp, ns1.dns.ne.jp
MX1firstline.co.jp (pri: 10)
TXT1v=spf1 a:www548b.sakura.ne.jp mx ~all
SOA1master.dns.ne.jp tech.sakura.ad.jp

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.dns.ne.jp, ns2.dns.ne.jp)

Analysis

Mail Server Role

firstline.co.jp serves as the mail server for firstline.co.jp.

IP Addresses

firstline.co.jp points to IP number 112.78.125.48.

For instance, other host names kigyoukengaku.com, megwin.com, airconpro.jp, nke-net.com and iwaidental.jp share IP numbers with firstline.co.jp.

Name Servers

The delegation for firstline.co.jp is handled by three name servers: master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

firstline.co.jp shares name servers with other domains at least partially, for example kfd.sakura.ne.jp, renewal-one.sakura.ne.jp, tattoo-base-trap.com, slsv.sakura.ne.jp and attracting-edition.com.

These name servers are commonly used with dns.sakura.ad.jp.

Host names with a single IP address: master.dns.ne.jp points to 210.224.172.18; ns1.dns.ne.jp points to 61.211.236.1; ns2.dns.ne.jp points to 133.167.21.1.

Mail Servers

firstline.co.jp is handled by a single mail server, firstline.co.jp.

firstline.co.jp points to a single IP: 112.78.125.48.