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    • last data update: 1969/12/31, 16:00

    Website loading time

    during the test: s

    cable connection (average): s

    DSL connection (average): s

    modem (average): s

    HTTP headers

    UTF-8

    en

    Information about DNS servers

    thegreatcourses.comTXTgoogle-site-verification=VDYYBqk6IgoKILxsnmGy7-wxEO3h5MLEGPfpmU-v6FIArrayIN43200
    thegreatcourses.comTXTv=spf1 ip4:68.163.80.46~allArrayIN43200
    thegreatcourses.comTXTv=spf1 ip4:12.109.33.142 ~allArrayIN43200
    thegreatcourses.comMX20cluster2a.us.messagelabs.comIN43200
    thegreatcourses.comMX10cluster2.us.messagelabs.comIN43200
    thegreatcourses.comSOAudns1.ultradns.netSysMgr.teachco.com201108070110800 3600 2592000 86400 IN 43200
    thegreatcourses.comA65.196.97.40IN43200
    thegreatcourses.comA98.191.169.151IN43200
    thegreatcourses.comNSudns2.ultradns.netIN43200
    thegreatcourses.comNSudns1.ultradns.netIN43200

    Received from the first DNS server

    Request to the server "thegreatcourses.com"
    You used the following DNS server:
    DNS Name: udns2.ultradns.net
    DNS Server Address: 204.74.101.1#53
    DNS server aliases:

    HEADER opcode: REQUEST, status: NOERROR, id: 29604
    flag: qr aa rd REQUEST: 1, ANSWER: 10, AUTHORITY: 0, ADDITIONAL: 0

    REQUEST SECTION:
    thegreatcourses.com. IN ANY

    ANSWER SECTION:
    thegreatcourses.com. 86400 IN A 65.196.97.40
    thegreatcourses.com. 86400 IN A 98.191.169.151
    thegreatcourses.com. 86400 IN NS udns2.ultradns.net.
    thegreatcourses.com. 86400 IN NS udns1.ultradns.net.
    thegreatcourses.com. 86400 IN SOA udns1.ultradns.net. SysMgr.teachco.com. 2011080701 10800 3600 2592000 86400
    thegreatcourses.com. 86400 IN MX 20 cluster2a.us.messagelabs.com.
    thegreatcourses.com. 86400 IN MX 10 cluster2.us.messagelabs.com.
    thegreatcourses.com. 86400 IN TXT "v=spf1 ip4:12.109.33.142 ~all"
    thegreatcourses.com. 86400 IN TXT "google-site-verification=VDYYBqk6IgoKILxsnmGy7-wxEO3h5MLEGPfpmU-v6FI"
    thegreatcourses.com. 86400 IN TXT "v=spf1 ip4:68.163.80.46~all"

    Received 401 bytes from address 204.74.101.1#53 in 14 ms

    Received from the second DNS server

    Request to the server "thegreatcourses.com"
    You used the following DNS server:
    DNS Name: udns1.ultradns.net
    DNS Server Address: 204.69.234.1#53
    DNS server aliases:

    HEADER opcode: REQUEST, status: NOERROR, id: 42522
    flag: qr aa rd REQUEST: 1, ANSWER: 10, AUTHORITY: 0, ADDITIONAL: 0

    REQUEST SECTION:
    thegreatcourses.com. IN ANY

    ANSWER SECTION:
    thegreatcourses.com. 86400 IN NS udns2.ultradns.net.
    thegreatcourses.com. 86400 IN NS udns1.ultradns.net.
    thegreatcourses.com. 86400 IN SOA udns1.ultradns.net. SysMgr.teachco.com. 2011080701 10800 3600 2592000 86400
    thegreatcourses.com. 86400 IN MX 20 cluster2a.us.messagelabs.com.
    thegreatcourses.com. 86400 IN MX 10 cluster2.us.messagelabs.com.
    thegreatcourses.com. 86400 IN TXT "v=spf1 ip4:12.109.33.142 ~all"
    thegreatcourses.com. 86400 IN TXT "google-site-verification=VDYYBqk6IgoKILxsnmGy7-wxEO3h5MLEGPfpmU-v6FI"
    thegreatcourses.com. 86400 IN TXT "v=spf1 ip4:68.163.80.46~all"
    thegreatcourses.com. 86400 IN A 65.196.97.40
    thegreatcourses.com. 86400 IN A 98.191.169.151

    Received 401 bytes from address 204.69.234.1#53 in 18 ms

    Subdomains (the first 50)

    Date: Sat15 Oct 2011 15:40:22 GMT

    Typos (misspells)

    rhegreatcourses.com
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    thegreaycourses.com    		thegrea6courses.com
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    tegreatcourses.com    		thgreatcourses.com
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    thegreeatcourses.com
    thegreaatcourses.com
    thegreattcourses.com
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    thegreatcoursess.com

    Location

    IP: 98.191.169.151, 65.196.97.40

    continent: NA, country: United States (USA), city: Louisville

    Website value

    rank in the traffic statistics: Connection: close

    There is not enough data to estimate website value.

    Basic information

    website build using CSS

    code weight: KB

    text per all code ratio: %

    title:

    description:

    keywords:

    encoding:

    language:

    Website code analysis

    one word phrases repeated minimum three times

    PhraseQuantity
    90.671
    0.9228
    1.391.16
    13.87

    two word phrases repeated minimum three times

    three word phrases repeated minimum three times

    B tags

    U tags

    I tags

    images

    headers

    H1

    H2

    H3

    H4

    H5

    H6

    internal links

    external links