Teratail.com teratail【テラテイル】｜ITエンジニア特化型Q&Aサイト
teratail（テラテイル）はプログラミングに特化したQ&Aサイトです。実現したい機能や作業中に発生したエラーについて質問すると、他のエンジニアから回答を得られます。
Server IP address resolved: Yes
Http response code: 200
Response time: 1.33 sec.
Last Checked: 02/02/2025
Teratail.com attracts 45,481 unique visitors daily, generating 89,598 pageviews. The estimated value of teratail.com is 1,181,023 USD. Each visitor views approximately 2.11 pages on average.
According to Majestic's traffic estimates, teratail.com ranks 60,033 globally, with the majority of its visitors coming from Japan, where it holds the 471 position.
It is beneficial for teratail.com that their data center (provided by AMAZON-02 - Amazon.com, Inc., US) is located in Japan, as this helps reduce page load time for most visitors.
See the list of other websites hosted by AMAZON-02 - Amazon.com, Inc., US.
Teratail.com is registered with the .COM top-level domain. Explore additional websites within the .COM zone.
A recent examination on (October 13, 2024), indicates that teratail.com has an expired SSL certificate issued by Amazon (expired on December 22, 2024). Click the "Refresh" button in the Safety Information section for updated SSL details. See the list of websites using SSL certificates issued by Amazon.
According to Google Safe Browsing, Google Safe Search and Symantec teratail.com appears to be a safe domain.
Based on Google's Mobile-Friendly test, teratail.com is optimized for mobile and tablet devices, although the web page loading speed could be improved.
Audience Geography. Where are teratail.com visitors located?
| Country | Visitors |
|---|---|
 Japan JP | 98.4% |
| Other | 1.6% |
| Country | Pageviews |
|---|---|
| Japan JP | 99.1% |
| Other | 0.9% |
| Country | Rank |
|---|---|
| Japan JP | 471 |
Where do visitors go on teratail.com?
| Subdomain | Pageviews |
|---|---|
| teratail.com | 99.95% |
| other | 0.05% |
| Subdomain | Pageviews per User |
|---|---|
| teratail.com | 2.1 |
| Subdomain | Reach |
|---|---|
| teratail.com | 99.89% |
How popular is teratail.com?
| Period | Global Rank | Global Rank Delta |
|---|---|---|
| past 3 months | 8199 | -386 |
| past month | 7620 | -1507 |
| past week | 9024 | 2350 |
| yesterday | 8139 | -16778 |
| Days | Pageviews Rank | Pageviews Rank Delta | Pageviews per Million | Pageviews per Million Delta | Pageviews per User | Pageviews per User Delta |
|---|---|---|---|---|---|---|
| 90 | 12242 | -127 | 604 | -0.932% | 1.97 | -3.43% |
| 30 | 10970 | -3686 | 685 | 36% | 2.1 | 20% |
| 7 | 14887 | 6465 | 51 | -43.91% | 1.7 | -35.36% |
| 1 | 13220 | -24095 | 59 | 200% | 1.9 | 4% |
| Days | Reach Rank | Reach Rank Delta | Reach per Million | Reach per Million Delta |
|---|---|---|---|---|
| 90 | 7328 | -443 | 113 | 2% |
| 30 | 6904 | -922 | 120 | 10% |
| 7 | 7609 | 1029 | 110 | -13.11% |
| 1 | 7102 | -15581 | 120 | 200% |
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton ConnectSafe evaluates teratail.com for any unsafe and insecure content. The results are critical for families with young children.
SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
McAfee assesses teratail.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze teratail.com for mature or inappropriate content, only security checks are evaluated.
The WOT calculates reputation of the teratail.com. This reputation system receives ratings from users and information from third-party sources, assesses the teratail.com for safety features and confirms, whether teratail.com is suitable for children.
| Domain | teratail.com |
| Issuer Organization | Amazon |
| Issuer | Amazon RSA 2048 M02 |
| Algorithm | RSA-SHA256 |
| Valid form | 11/23/2023 |
| Expiration | 12/22/2024 |
| Signed | Certificate is not self signed |
| Additional Domains |
teratail.com |
ASN ID: 16509
ASN Title: AMAZON-02 - Amazon.com, Inc., US
Last Update: 07/19/2024
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#
ASNumber: 16509
ASName: AMAZON-02
ASHandle: AS16509
RegDate: 2000-05-03
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/16509
OrgName: Amazon.com, Inc.
OrgId: AMAZON-4
Address: 1918 8th Ave
City: SEATTLE
StateProv: WA
PostalCode: 98101-1244
Country: US
RegDate: 1995-01-23
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/AMAZON-4
OrgAbuseHandle: AEA8-ARIN
OrgAbuseName: Amazon EC2 Abuse
OrgAbusePhone: +1-206-266-4064
OrgAbuseEmail: abuse@amazonaws.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/AEA8-ARIN
OrgTechHandle: ANO24-ARIN
OrgTechName: Amazon EC2 Network Operations
OrgTechPhone: +1-206-266-4064
OrgTechEmail: amzn-noc-contact@amazon.com
OrgTechRef: https://rdap.arin.net/registry/entity/ANO24-ARIN
RTechHandle: AC6-ORG-ARIN
RTechName: Amazon-com Incorporated
RTechPhone: +1-206-266-2187
RTechEmail: ipmanagement@amazon.com
RTechRef: https://rdap.arin.net/registry/entity/AC6-ORG-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#
Domain Name: TERATAIL.COM
Registry Domain ID: 1830422028_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.jprs.jp
Registrar URL: http://jprs.jp/registrar/
Updated Date: 2024-08-27T18:15:03Z
Creation Date: 2013-10-09T01:13:12Z
Registry Expiry Date: 2025-10-09T01:13:12Z
Registrar: Japan Registry Services Co., Ltd.
Registrar IANA ID: 1485
Registrar Abuse Contact Email: gtld-abuse@jprs.jp
Registrar Abuse Contact Phone: +81.352158457
Domain Status: ok https://icann.org/epp#ok
Name Server: NS-1043.AWSDNS-02.ORG
Name Server: NS-1877.AWSDNS-42.CO.UK
Name Server: NS-7.AWSDNS-00.COM
Name Server: NS-872.AWSDNS-45.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-20T18:03:39Z
| Host | A Record | TTL |
|---|---|---|
| teratail.com | 57.180.210.215 | 60 |
| teratail.com | 35.76.160.105 | 60 |
| teratail.com | 54.250.132.11 | 60 |
| Host | MX Record | Priority | TTL |
|---|---|---|---|
| teratail.com | aspmx.l.google.com | 1 | 300 |
| teratail.com | alt3.aspmx.l.google.com | 10 | 300 |
| teratail.com | alt4.aspmx.l.google.com | 10 | 300 |
| teratail.com | alt1.aspmx.l.google.com | 5 | 300 |
| teratail.com | alt2.aspmx.l.google.com | 5 | 300 |
| Host | NS Record | TTL |
|---|---|---|
| teratail.com | ns-1043.awsdns-02.org | 172800 |
| teratail.com | ns-1877.awsdns-42.co.uk | 172800 |
| teratail.com | ns-7.awsdns-00.com | 172800 |
| teratail.com | ns-872.awsdns-45.net | 172800 |
| Host | TXT Record | TTL |
|---|---|---|
| teratail.com | google-site-verification=AmSo_GrO03xJgOb3j93G44EfBiKKBbaWmagZiLG9kBE | 300 |
| teratail.com | google-site-verification=nK3X1Y3yJN5Esj_bh4Jz-dE7sIU53orkzXLaPDaUr7Q | 300 |
ns-872.awsdns-45.net
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400
Last tested: 11/07/2016
| Total Resources | 154 |
| Number of Hosts | 40 |
| Static Resources | 74 |
| JavaScript Resources | 29 |
| CSS Resources | 3 |
Last tested: 11/07/2016
| Total Resources | 123 |
| Number of Hosts | 36 |
| Static Resources | 39 |
| JavaScript Resources | 25 |
| CSS Resources | 8 |
gaylordhotels.com
jsperf.com
cellular-news.com
greenriver.edu
fmbb.ru
netvolante.jp
gacorslotdemo.org
urbanlegends.com
thirtyhandmadedays.com
teratail.com
mdcr.cz
savebuckets.com
umk.ac.id
honeygain.com
overwatch.com
luxuryretreats.com
tennis-point.com
michigandnr.com
publiccharters.org
easywebcamsex.com
givingwhatwecan.org
www.teratail.net
www.teratail.org
www.teratail.info
www.teratail.biz
www.teratail.us
www.teratail.mobi
www.eratail.com
www.teratail.com
www.reratail.com
www.treratail.com
www.rteratail.com
www.feratail.com
www.tferatail.com
www.fteratail.com
www.geratail.com
www.tgeratail.com
www.gteratail.com
www.yeratail.com
www.tyeratail.com
www.yteratail.com
www.tratail.com
www.twratail.com
www.tewratail.com
www.tweratail.com
www.tsratail.com
www.tesratail.com
www.tseratail.com
www.tdratail.com
www.tedratail.com
www.tderatail.com
www.trratail.com
www.terratail.com
www.teatail.com
www.teeatail.com
www.tereatail.com
www.teeratail.com
www.tedatail.com
www.terdatail.com
www.tefatail.com
www.terfatail.com
www.tefratail.com
www.tetatail.com
www.tertatail.com
www.tetratail.com
www.tertail.com
www.terqtail.com
www.teraqtail.com
www.terqatail.com
www.terwtail.com
www.terawtail.com
www.terwatail.com
www.terstail.com
www.terastail.com
www.tersatail.com
www.terztail.com
www.teraztail.com
www.terzatail.com
www.teraail.com
www.terarail.com
www.teratrail.com
www.terartail.com
www.terafail.com
www.teratfail.com
www.teraftail.com
www.teragail.com
www.teratgail.com
www.teragtail.com
www.terayail.com
www.teratyail.com
www.teraytail.com
www.teratil.com
www.teratqil.com
www.terataqil.com
www.teratqail.com
www.teratwil.com
www.teratawil.com
www.teratwail.com
www.teratsil.com
www.teratasil.com
www.teratsail.com
www.teratzil.com
www.teratazil.com
www.teratzail.com
www.teratal.com
www.terataul.com
www.terataiul.com
www.teratauil.com
www.teratajl.com
www.terataijl.com
www.teratajil.com
www.teratakl.com
www.terataikl.com
www.teratakil.com
www.terataol.com
www.terataiol.com
www.terataoil.com
www.teratai.com
www.terataip.com
www.teratailp.com
www.terataipl.com
www.terataio.com
www.teratailo.com
www.terataik.com
www.teratailk.com
www.teratail.con