Tuesday, March 29, 2011

Why you need multiple, physically disparate DNS servers

ISP DNS Lookup of bbc.co.uk A record





Germany: wilhelm.tel #1      [No cached answer: Would go to NS of ] 

Germany: wilhelm.tel #2      [No cached answer: Would go to NS of ] 

Ireland: Energis             TIMEOUT

Ireland: Energis             TIMEOUT

Israel: Actcom #1            [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 56m 46s] 

Israel: Actcom #2            [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 12m 10s] 

Israel: Barak 013 #1         [No cached answer: Would go to NS of ] 

Israel: Barak 013 #2         [No cached answer: Would go to NS of ] 

Israel: Barak 013 #3         [No cached answer: Would go to NS of ] 

Israel: Bezeq International  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 58m 6s] 

Israel: Bezeq International  [No cached answer: Would go to NS of ] 

Israel: Bezeq International  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 1m 24s] 

Israel: Bezeq International  TIMEOUT

Israel: Golden Lines 012 #1  [No cached answer: Would go to NS of ] 

Israel: Golden Lines 012 #2  [No cached answer: Would go to NS of ] 

Israel: Netvision #1         [No cached answer: Would go to NS of ] 

Israel: Netvision #2         [No cached answer: Would go to NS of ] 

Israel: QOS #1               [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 10m 7s] 

Israel: QOS #2               [No cached answer: Would go to NS of ] 

Israel: Smile 015 #1         TIMEOUT

Israel: Smile 015 #2         TIMEOUT

Israel: Smile 015 #3         TIMEOUT

Italy: Advanced Systems #1   TIMEOUT

Italy: Aruba S.p.A. #1       [No cached answer: Would go to NS of (root)] 

Italy: Aruba S.p.A. #2       [No cached answer: Would go to NS of (root)] 

Italy: Edisontel S.p.A./Eute [No cached answer: Would go to NS of ] 

Italy: Edisontel S.p.A./Eute [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 57m 1s] 

Italy: FastWeb S.p.A. #1     [No cached answer: Would go to NS of ] 

Italy: FastWeb S.p.A. #2     [No cached answer: Would go to NS of ] 

Italy: I.Net S.p.A. #1       [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 8m 51s] 

Italy: I.Net S.p.A. #2       [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 2m 18s] 

Italy: Interbusiness/Telecom [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 0m 52s] 

Italy: Interbusiness/Telecom [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 0m 16s] 

Italy: Interbusiness/Telecom [No cached answer: Would go to NS of co.uk.] 

Italy: ITnet S.p.A. #1       [No cached answer: Would go to NS of ] 

Italy: ITnet S.p.A. #2       [No cached answer: Would go to NS of ] 

Italy: Wind Telecomunicazion [No cached answer: Would go to NS of ] 

Italy: Wind Telecomunicazion [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 5m 22s] 

New Zealand: Xtra (Telecom)  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 16h 9m 52s] 

New Zealand: Xtra (Telecom)  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 14h 49m 35s] 

UK: AOL (UK)                 TIMEOUT

UK: AOL (UK)                 [No cached answer: Would go to NS of ] 

UK: AOL (UK)                 TIMEOUT

UK: AOL (UK)                 [No cached answer: Would go to NS of ] 

UK: blueyonder               [No cached answer: Would go to NS of ] 

UK: blueyonder               [No cached answer: Would go to NS of ] 

UK: BT Broadband & BT Yahoo  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 7h 11m 43s] 

UK: BT Broadband & BT Yahoo  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 7h 19m 51s] 

UK: BT Broadband & BT Yahoo  TIMEOUT

UK: BT Broadband & BT Yahoo  TIMEOUT

UK: BT Broadband & BT Yahoo  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 13h 25m 48s] 

UK: BT Broadband & BT Yahoo  TIMEOUT

UK: BT Broadband & BT Yahoo  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 13h 25m 48s] 

UK: BT Broadband & BT Yahoo  [No cached answer: Would go to NS of ] 

UK: BT Broadband & BT Yahoo  TIMEOUT

UK: BT Broadband & BT Yahoo  TIMEOUT

UK: BT Broadband & BT Yahoo  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 7h 25m 59s] 

UK: BT Broadband & BT Yahoo  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 7h 22m 46s] 

UK: BT Broadband & BT Yahoo  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 7h 14m 8s] 

UK: BT Broadband & BT Yahoo  [No cached answer: Would go to NS of ] 

UK: BT Broadband & BT Yahoo  [No cached answer: Would go to NS of ] 

UK: BT Broadband & BT Yahoo  TIMEOUT

UK: BT Broadband & BT Yahoo  TIMEOUT

UK: Claranet Ltd             Not successful: ex=0 suc=0 an=0 ar=0 ns=0 type= rcode=0

UK: Claranet Ltd             Not successful: ex=0 suc=0 an=0 ar=0 ns=0 type= rcode=0

UK: Demon Internet           Not successful: ex=0 suc=0 an=0 ar=0 ns=0 type= rcode=0

UK: Demon Internet           Not successful: ex=0 suc=0 an=0 ar=0 ns=0 type= rcode=0

UK: Easynet Ltd.             [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 56m 51s] 

UK: Easynet Ltd.             [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 57m 0s] 

UK: Easynet Ltd. dialup      TIMEOUT

UK: Easynet Ltd. dialup      TIMEOUT

UK: freenetname              TIMEOUT

UK: freenetname              TIMEOUT

UK: freeserve(?)             TIMEOUT

UK: freeserve(?)             [No cached answer: Would go to NS of ] 

UK: Global Internet          TIMEOUT

UK: Global Internet          TIMEOUT

UK: Griffin Internet         [No cached answer: Would go to NS of ] 

UK: Griffin Internet         [No cached answer: Would go to NS of ] 

UK: Loud-n-Clear             [No cached answer: Would go to NS of (root)] 

UK: Loud-n-Clear             TIMEOUT

UK: Loud-n-Clear             TIMEOUT

UK: Mistral Internet         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 59m 42s] 

UK: Mistral Internet         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 26m 52s] 

UK: NewNet                   TIMEOUT

UK: NewNet                   [No cached answer: Would go to NS of (root)] 

UK: Nildram Ltd.             Not successful: ex=0 suc=0 an=0 ar=0 ns=0 type= rcode=0

UK: Nildram Ltd.             TIMEOUT

UK: Nildram Ltd.             Not successful: ex=0 suc=0 an=0 ar=0 ns=0 type= rcode=0

UK: Nildram Ltd.             [No cached answer: Would go to NS of ] 

UK: NTL World & Virgin.net   Not successful: ex=0 suc=0 an=0 ar=0 ns=0 type= rcode=0

UK: NTL World & Virgin.net   Not successful: ex=0 suc=0 an=0 ar=0 ns=0 type= rcode=0

UK: One.Tel                  [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 56m 3s] 

UK: One.Tel                  TIMEOUT

UK: PIPEX                    [No cached answer: Would go to NS of ] 

UK: PIPEX                    [No cached answer: Would go to NS of ] 

UK: PlusNet plc              TIMEOUT

UK: PlusNet plc              TIMEOUT

UK: PlusNet plc              TIMEOUT

UK: PlusNet plc              TIMEOUT

UK: Prodigy Networks         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 58m 59s] 

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 57m 47s] 

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 56m 49s] 

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 8m 7s] 

UK: Prodigy Networks         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 5m 40s] 

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Prodigy Networks         TIMEOUT

UK: Supanet                  TIMEOUT

UK: Supanet                  TIMEOUT

UK: Tiscali (UK)             [No cached answer: Would go to NS of ] 

UK: Tiscali (UK)             [No cached answer: Would go to NS of ] 

UK: Wanadoo UK(?)            [No cached answer: Would go to NS of ] 

UK: Wanadoo UK(?)            [No cached answer: Would go to NS of ] 

UK: Zen Internet             [No cached answer: Would go to NS of ] 

UK: Zen Internet             TIMEOUT

US: Advanced Systems #1      TIMEOUT

US: Advanced Systems #2      TIMEOUT

US: ATT Worldnet #2          TIMEOUT

US: ATT Worldnet #1          TIMEOUT

US: Choicenet #1             [No cached answer: Would go to NS of ] 

US: Choicenet #2             [No cached answer: Would go to NS of ] 

US: Choicenet #3             [No cached answer: Would go to NS of ] 

US: Choicenet #4             [No cached answer: Would go to NS of ] 

US: Choicenet #5             TIMEOUT

US: Choicenet #6             TIMEOUT

US: Choicenet #7             TIMEOUT

US: Choicenet #8             TIMEOUT

US: Compuserve #1            [No cached answer: Would go to NS of ] 

US: Compuserve #2            [No cached answer: Would go to NS of ] 

US: Drizzle #1               [No cached answer: Would go to NS of ] 

US: Drizzle #2               TIMEOUT

US: Earthlink #1             [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 5m 43s] 

US: Earthlink #2             [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 1m 15s] 

US: Earthlink NetAxs #1      [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 22h 57m 55s] 

US: Earthlink NetAxs #2      [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 23h 9m 39s] 

US: FrontierNet, California, [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 10m 18s] 

US: FrontierNet, California, [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 7m 15s] 

US: FrontierNet, Illinois #1 TIMEOUT

US: FrontierNet, Illinois #2 [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 6m 12s] 

US: FrontierNet, New York #1 [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 2m 43s] 

US: FrontierNet, New York #2 [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 59m 36s] 

US: FrontierNet, Road Runner [No cached answer: Would go to NS of ] 

US: FrontierNet, Road Runner [No cached answer: Would go to NS of ] 

US: FrontierNet, West Virgin [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 55m 55s] 

US: FrontierNet, West Virgin [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 57m 31s] 

US: GTE #1                   [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 9h 40m 47s] 

US: GTE #2                   [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 9h 48m 45s] 

US: IBMnet #1                [No cached answer: Would go to NS of (root)] 

US: IBMnet #2                [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 55m 28s] 

US: Internet America #1      [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 57m 28s] 

US: Internet America #2      Not successful: ex=0 suc=0 an=0 ar=0 ns=0 type= rcode=0

US: Internet MCI #1          [No cached answer: Would go to NS of ] 

US: MCI Internet #2          [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 6m 44s] 

US: MCI Internet #2          [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 58m 22s] 

US: MCI Worldcom #1          [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 55m 13s] 

US: MCI Worldcom #2          [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 1m 51s] 

US: Mindspring #1            [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 10m 0s] 

US: Mindspring #2            [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 3m 57s] 

US: OneWest Idaho #1         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 5m 15s] 

US: OneWest Idaho #2         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 5m 15s] 

US: OneWest Montana #1       [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 5m 15s] 

US: OneWest Montana #2       [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 5m 15s] 

US: OneWest Wyoming #1       TIMEOUT

US: OneWest Wyoming #2       TIMEOUT

US: Prodigy Internet #1      [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 6m 35s] 

US: Prodigy Internet #2      [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 6m 35s] 

US: Qwest #1                 [No cached answer: Would go to NS of ] 

US: Qwest #2                 [No cached answer: Would go to NS of ] 

US: Roadrunner #1            [No cached answer: Would go to NS of (root)] 

US: Roadrunner #2            [No cached answer: Would go to NS of (root)] 

US: Southwestern Bell #1     [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 57m 58s] 

US: Southwestern Bell #2     [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 57m 58s] 

US: SprintNet #1             TIMEOUT

US: Sprynet #1               [No cached answer: Would go to NS of ] 

US: Sprynet #2               [No cached answer: Would go to NS of ] 

US: Sprynet #1               [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 5m 26s] 

US: Sprynet #2               [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 1m 37s] 

US: Sympatico #1             [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 23h 3m 51s] 

US: Touch America #1         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 58m 8s] 

US: Touch America #2         [No cached answer: it does have the NS records for bbc.co.uk., with a TTL of 1d 22h 58m 21s] 

US: UUNet #1                 [No cached answer: Would go to NS of ] 

US: UUNet #2                 [No cached answer: Would go to NS of ] 



This test connects to a number of commonly used DNS servers, and tests to see if they have your DNS record(s)
in their cache.

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