viettel.com.vn

https://viettel.com.vn· First analyzed 18 May 2026· Updated 18 May 2026

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viettel.com.vn

Mobile

Sponsored

Hosting Provider

VIETEL

IP Address

171.244.232.16

Site Location

🇻🇳 Vietnamvia tld

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS7552

Organization

VIETEL

Server

Cloudrity

Nameservers

dns2.vietel.com.vn.dns1.vietel.com.vn.

Performance

Core Web Vitals

Weight

First Contentful Paint

942 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.8 MB

133 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

VIETEL

Technology Stack

14 Technologies Detected

Libraries

jQueryv3.6.0

jQuery UI

Slick Carousel

UI Components

Swiper Owl Carousel Fancybox

Analytics

CSS Frameworks

Other

Icon Libraries

Fonts

SEO Analysis

D55/100

Meta Tags8/15

Content12/12

Headings3/8

Technical11/21

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social1/5

Freshness0/4

Mobile4/4

Indexability3/3

viettel.com.vnviettel.com.vn

Viettel Group

Tập Đoàn Công Nghiệp - Viễn Thông Quân Đội (Viettel) Tiên Phong Xây Dựng Các Nền Tảng Số, Là Nơi Mỗi Thành Viên Trong Xã Hội Cộng Hưởng Để Cùng Kiến Tạo Xã H...

Description truncated.

Title Length13 chars

Recommended: 50-60 chars (~79px / 580px)

Description Length163 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (185/193) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Local SEO

Local Search Readiness

10/100

Poor

3 12 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F36/100

Bot Access

20/25

Machine Read.

9/25

Schema Data

0/25

Citation

7/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:18%

Words:10,172

Token eff.:Excessive

Sections/1K:2.1

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary10w

Descriptive Headingsavg 2.5w

Canonical URL

Open Graph1/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

68/100

Passed

Critical

Warnings

Images & Alt Text

15/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

11/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

12/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

6/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

4 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

31/100

352 mg

CO₂e / view

2.8 MB

Page Weight

30%

Cleaner Than

New Visitor

402 mg

Returning (cached)

201 mg

Annual (10K/mo)

42.2 kg

Emission Segments

Data Center

79 mg

Network

85 mg

Device

189 mg

Resource Breakdown

JavaScript

295.6 KB

Images

175.3 KB

CSS

2.3 MB

Fonts

2.5 KB

HTML

49.4 KB

Green Hosting Not Verified

VIETEL

6 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

71%Good

Static / Informational

HTTPS

No WAF

117d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.08.2025

Valid Until

13.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

viettel.com.vn*.viettel.com.vn

SHA-256 Fingerprint

C9:A2:D4:D1:95:F5:C9:52:EE:9A:DB:71:D7:BB:F9:A7:1F:60:74:11...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8,gbk

date

Mon, 18 May 2026 23:11:00 GMT

expires

Thu, 01 Jan 1970 00:00:01 GMT

server

Cloudrity

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

mailfilter-in-02.viettel.com.vn

Domain Information

viettel.com.vn

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

64/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Sarabun

WCAG Partial

61/100

Readability

/30

24/30

16px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

16/25

3.71:1 min contrast

Performance

/25

14/25

1 font · 7 req

Heading Font

Sarabun

Sans

Body Font

Sarabun

Sans16px

Contrast Ratio

3.71:1

25 issues

Reading Comfort

~36 CPL

Narrow lines

32px

28px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 25 elements below WCAG AA threshold (min 3.7:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 1 font families keeps load times fast.

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

GGoogle Fonts

Color Palette

5 unique colors

Light

#f8f6f7

Primary· 96.8%

#a0c7e9

Accent· 0.9%

#86b4e2

Accent· 0.8%

#bed9ef

Accent· 0.8%

#dfe8f3

Secondary· 0.7%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(18)googletagmanager.com(2)

Website Identity

viettel.com.vn

truyenthong@viettel.com.vn

Location detected: 🇻🇳 Vietnamvia tld

Social Profiles

Facebook LinkedIn YouTube

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Last analyzed: 18 May 2026 at 23:11

Historical Analysis & Change Tracking