out of 100 for desktop and 50 out of 100 for mobile
According to the given information, sekisuihouse.co.jp is a website of the popular Japanese housing manufacturer, Sekisui House. The website, as expected, revolves around the company's core business, which is constructing homes. The homepage is designed and laid out in such a way that it feels like a virtual representation of a house. The main navigation menu is located at the top of the page, and it includes links to various sections of the website, such as products, services, company profile, and more.
The website's interface is highly professional and elegant, with a clean composition that reinforces the brand's sophisticated image. The company's name, Sekisui House, is prominently displayed, and the website's description states that the company specializes in constructing custom-built houses, condominiums, rental properties, and other housing projects.
Sekisuihouse.co.jp appears to be a family-friendly website, given its focus on residential housing and the sense of community that it strives to create. The company's building design philosophy appears to prioritize comfort, safety, and aesthetics in creating homes that provide a warm, welcoming environment.
Regarding the website's performance, it scores an average of 56 out of 100 for desktop speed and 50 out of 100 for mobile speed on Google PageSpeed Insights. While this score is not ideal, it's worth noting that the primary focus of the website may not be on speed optimization. The website has a high number of unique users daily and page viewer metrics.
In conclusion, Sekisui House's website, sekisuihouse.co.jp, is a beautifully designed website with an intuitive navigation menu system that effectively showcases the company's housing projects. While the website speed may not be optimal, the site's quality and performance are still commendable, making it a great resource for anyone in need of housing in Japan.





| Domain | www.sekisuihouse.co.jp |
| Issuer Organization | DigiCert Inc |
| Issuer | DigiCert Global G3 TLS ECC SHA384 2020 CA1 |
| Algorithm | ecdsa-with-SHA384 |
| Valid form | 05/20/2025 |
| Expiration | 03/14/2026 |
| Signed | Certificate is not self signed |
| Additional Domains |
www.sekisuihouse.co.jp 2c.sekisuihouse.jp 2c.stg.sekisuihouse.jp 5honnoki.jp cms-web1.sekisuihouse.co.jp cms-web2.sekisuihouse.co.jp kanri-stg.sekisuihouse.co.jp kanri.sekisuihouse.co.jp noc.sekisuihouse.co.jp saiyo-sekisuihouse.jp sekisuihouse-global.com sekisuihouse.co.jp shkoujiten.com shm-keiei.com stg-cms.sekisuihouse.co.jp stg.tripbasestyle.com tlmsurvey.sekisuihouse.co.jp tripbasestyle.com www.5honnoki.jp www.common.sekisuihouse.co.jp www.saiyo-sekisuihouse.jp www.sekisuihouse-global.com www.sekisuihouse.com www.shkoujiten.com www.shm-keiei.com www.stg.5honnoki.jp www.stg.saiyo-sekisuihouse.jp www.stg.sekisuihouse-global.com www.stg.sekisuihouse.co.jp www.stg.sekisuihouse.com www.stg.shkoujiten.com www.stg.shm-keiei.com www.sumai-smile.net www.sumufumulab.jp www.tripbasestyle.com www4.sekisuihouse.co.jp www4.stg.sekisuihouse.co.jp |
Alexa Rank shows how popular sekisuihouse.co.jp is in comparison with other sites. The most popular site has Alexa Rank equals 1. If sekisuihouse.co.jp has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to sekisuihouse.co.jp and pageviews on sekisuihouse.co.jp over the past 3 months.
ASN ID: 20940
ASN Title: Akamai International B.V.Last Update: 12/17/2025
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[ JPRS database provides information on network administration. Its use is ]
[ restricted to network administration purposes. For further information, ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]
Domain Information: [ドメイン情報]
a. [ドメイン名] SEKISUIHOUSE.CO.JP
e. [そしきめい] せきすいはうすかぶしきがいしゃ
f. [組織名] 積水ハウス株式会社
g. [Organization] Sekisui House, Ltd.
k. [組織種別] 株式会社
l. [Organization Type] Company
m. [登録担当者] KH21552JP
n. [技術連絡担当者] KH21552JP
p. [ネームサーバ] a1-80.akam.net
p. [ネームサーバ] a3-66.akam.net
p. [ネームサーバ] a6-65.akam.net
p. [ネームサーバ] a7-66.akam.net
p. [ネームサーバ] a8-64.akam.net
p. [ネームサーバ] a12-66.akam.net
s. [署名鍵] 58096 13 2 (
40D7068EA31CC7EA6EB389FCE31E85A5
C8C12740C7F07EF93EAE1D06BB482C9C )
[状態] Connected (2025/08/31)
[登録年月日] 1996/08/14
[接続年月日] 1996/09/26
[最終更新] 2024/10/23 07:02:21 (JST)
| Host | A Record | TTL |
|---|---|---|
| sekisuihouse.co.jp | 133.162.121.142 | 600 |
| Host | MX Record | Priority | TTL |
|---|---|---|---|
| sekisuihouse.co.jp | i1301.mailsecurity-nec.jp | 10 | 600 |
| Host | NS Record | TTL |
|---|---|---|
| sekisuihouse.co.jp | ns1.sekisuihouse.co.jp | 600 |
| sekisuihouse.co.jp | ns-tk011.ocn.ad.jp | 600 |
| sekisuihouse.co.jp | ns2.sekisuihouse.co.jp | 600 |
| Host | TXT Record | TTL |
|---|---|---|
| sekisuihouse.co.jp | pardot971633=cd991922dcb2f5de8604757b0699f83282c5728184747ee28fe54d9693260801 | 600 |
| sekisuihouse.co.jp | jtts8ywxkn4s5y255zzd3psbff1xf4df | 600 |
| sekisuihouse.co.jp | webexdomainverification.HE0G=63e89e47-bcbd-4a4a-9441-f88665ac1df1 | 600 |
| sekisuihouse.co.jp | apple-domain-verification=McFZYfJ9djwiLj8U | 600 |
| sekisuihouse.co.jp | spf2.0 a:mail.sekisuihouse.co.jp include:spf.messagelabs.com include:crmstyle.com include:spf.betrend.com include:spf.protection.outlook.com ~all | 600 |
| sekisuihouse.co.jp | v=spf1 ip4:202.18.209.18 ip4:202.18.209.19 ip4:202.18.209.20 ip4:202.18.210.18 ip4:202.18.210.19 ip4:202.18.210.20 include:crmstyle.com include:spf.messagelabs.com include:spf.betrend.com include:spf.protection.outlook.com | 600 |
ns1.sekisuihouse.co.jp
TTL: 600
Email address: postmaster.sekisuihouse.co.jp
Serial: 2022040501
Refresh: 10800
Retry: 3600
Expire: 2592000
Minimum: 1200
Last tested: 11/14/2016

| Total Resources | 178 |
| Number of Hosts | 24 |
| Static Resources | 144 |
| JavaScript Resources | 50 |
| CSS Resources | 13 |
Last tested: 11/14/2016


| Total Resources | 69 |
| Number of Hosts | 16 |
| Static Resources | 42 |
| JavaScript Resources | 23 |
| CSS Resources | 1 |