resolving www.ecb.europa.eu tages ages
Matus UHLAR - fantomas
uhlar at fantomas.sk
Fri Jun 17 11:04:51 UTC 2022
Hello,
I encountered case where resolution of www.ecb.europa.eu takes long time and
I can't find out why.
I'm trying to find the culprit using dig +trace and resolution times change
from < 1 second to > 15 seconds, while response times reported by dig say
miliseconds.
multiple runs of dig seem to fix the issue until I clear named cache.
(which indicated problem is in DNS, but I still have no idea where)
I'm out od ideas what to search for.
I have debian 11 with bind version 1:9.16.27-1~deb11u1
an example dig that took 5 seconds pasted:
# time dig +trace www.ecb.europa.eu
; <<>> DiG 9.16.27-Debian <<>> +trace www.ecb.europa.eu
;; global options: +cmd
. 194472 IN NS m.root-servers.net.
. 194472 IN NS k.root-servers.net.
. 194472 IN NS f.root-servers.net.
. 194472 IN NS g.root-servers.net.
. 194472 IN NS h.root-servers.net.
. 194472 IN NS d.root-servers.net.
. 194472 IN NS b.root-servers.net.
. 194472 IN NS c.root-servers.net.
. 194472 IN NS l.root-servers.net.
. 194472 IN NS e.root-servers.net.
. 194472 IN NS j.root-servers.net.
. 194472 IN NS a.root-servers.net.
. 194472 IN NS i.root-servers.net.
. 194472 IN RRSIG NS 8 0 518400 20220626050000 20220613040000 47671 . iUnxO5EIpOY35jg5SR2+ZW9mYcieUMFZn2JwNHpEPW/YxGfXh+XjLXpC n+ByMYEB2L1b1zzcx86wnyKxnuhU8O/EH63w13op+lo+MxVOJlFOribp 6jV2BZn+fHCJDE/5VHtSGYI741Uf1aUudjrX7htYVngg7Z1eTI0PinGN Z46j/xRcwk5KlHKExmgQSlS1FrLT0yiBeT6Tg48guYfYKbpDNIcy3vS4 7BIv7U0jDmynl8cOYlfgDH2Nft6Vw3vrrVjMFkyWsIdFCsfejrff8UqR JhuE47lm0JdhV7z+3NfoJRANaRjAfD0ufB1chXuFQpsuquAZ907fh+e3 +Ny+kg==
;; Received 1137 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms
eu. 172800 IN NS x.dns.eu.
eu. 172800 IN NS si.dns.eu.
eu. 172800 IN NS be.dns.eu.
eu. 172800 IN NS w.dns.eu.
eu. 172800 IN NS y.dns.eu.
eu. 86400 IN DS 59479 8 2 5DBAA81BC0BEFE921886D8DA28498D9FD441B457FB0E3642A0B2F981 1C8E15E0
eu. 86400 IN RRSIG DS 8 1 86400 20220630050000 20220617040000 47671 . ng+6lWObqlR9d72YQ+i4K5NGoIqgUfgADqrrrw83a7nVIZzM0vLNwsA2 h7lOAClHLNzYtaSh3Y9RmjjfaOEggPX/qHe1CXr9OG+Ezn1TiQHIBZ8b EDO2sub4oUG6SqBCM4TEcFodiDV1XaNhOFxbQ++7woya3JlDGfG77Dpi osL8LqZNwvrMcMglfC/anDJwPkE4n4Ywd/UMpsG6+An/HSMn/DLRmaBy Xt1IhMzRZKeIshqVLS0i/JT8A2jzFQjhn80CGAoGe7Lfhk393E81Bm2h lJGsBFaPdoX8oLjvPsjk7kgu4RCNM82zR0GAA0CxJurph7u/PQDlNwFY EqvVOQ==
;; Received 719 bytes from 192.112.36.4#53(g.root-servers.net) in 19 ms
europa.eu. 86400 IN NS ns1.bt.net.
europa.eu. 86400 IN NS ns2eu.bt.net.
europa.eu. 86400 IN NS ns1bru.europa.eu.
europa.eu. 86400 IN NS ns1lux.europa.eu.
europa.eu. 86400 IN NS ns2bru.europa.eu.
europa.eu. 86400 IN NS ns2lux.europa.eu.
europa.eu. 86400 IN NS ns3bru.europa.eu.
europa.eu. 86400 IN NS ns3lux.europa.eu.
europa.eu. 86400 IN NS ns4az1.europa.eu.
europa.eu. 86400 IN DS 6250 8 2 0186EEFF28A83D2C950963CEEF2F2070DC0885AC8AD7106B03A9741C 25DC6B82
europa.eu. 86400 IN DS 14845 8 2 9EF3C28F5B3A3D33756D61715B1BDBDBB07E0555598D30256D1F2B71 95324846
europa.eu. 86400 IN RRSIG DS 8 2 86400 20220623041700 20220616041129 27435 eu. XakdaRA9D2dJc7PciufTV202vD0+QVIjdHl0G9IVkvF/UNEOZCheEJs8 F/+Dv+mVVfVyNTlBpi+gRLmj6RNw6BN1vD4C5TNsniS/s5r//IDJd7p9 Sn7pviz7YgZigyVfI0lFE62tZw5zdotpqKhvtro/Pit/16MvdnmKWjvb u8I=
;; Received 691 bytes from 194.0.25.28#53(w.dns.eu) in 15 ms
ecb.europa.eu. 3600 IN NS ns1.coltnet.at.
ecb.europa.eu. 3600 IN NS pdns109.ultradns.net.
ecb.europa.eu. 3600 IN NS pdns109.ultradns.biz.
ecb.europa.eu. 3600 IN NS pdns109.ultradns.org.
ecb.europa.eu. 3600 IN NS ns8.colt.net.
ecb.europa.eu. 3600 IN NS pdns109.ultradns.com.
ecb.europa.eu. 1800 IN NSEC ecdc.europa.eu. NS RRSIG NSEC
ecb.europa.eu. 1800 IN RRSIG NSEC 8 3 1800 20220628104634 20220617040432 45108 europa.eu. W6Sf4qHBcTkjXR8cnt/hG1mAicP6RsgwE+dR9jqNoPT7eAb1jgd/qh6R Jw71BT9Otghuu2aMNtMm4ZhwNrN8YpR0HyxHx5mDO3DZsO4Sqx21+cmp /zUn22xECJI3oVQy5qKczejRQLFiQY7yPg+57Z2V5Zj7lvdDDG8f2IeJ QY75DcTLFuWriUS1Qos1+koXYox4qmAXjq6BgN8/T82iVpYqPjBMxoVJ pjcWnEO/GYzcVOZXQefDNPivF3TeeojbgPt5pmBhz29MlflPi0i1GAna mg1soT9JnEDFmK1y6Va7yVrOPFbpuslSfJSX710JFwVEZsEBfXSWt7ZE sp7gYQ==
ecb.europa.eu. 1800 IN RRSIG NSEC 8 3 1800 20220715202454 20220617040450 33483 europa.eu. CsLsmCuiFgHEzpPIFcecZojRcm8CmuV6laZJP0kca+xmbUMKiYV9aDoZ Yq9+DAPHJBdnYXUHAGPjLuxC+jfWSwUg2k3t/obrFFYz3MOV2xf802Az mrwjQKbozUVVfiftuPl+n+iaw60ocqyfH1Ev8qDBjiMJ3a382VUWFu5r DP2mpJ9vl9xvAMxN51uZ38lSkXArVEU8t84OMr7Dh6zikvcIlbwaj3TH RFsqoDIB3yfPuAAJksqvxWg8DPARONUHfHZ7njiWef3njjwfcGnRv7sn MecG5j0hL2SrfHxI4eqbxRabOzZ2gzLUh37aIFnptHHcZy84fJgT0Ve1 sE1iOg==
;; Received 891 bytes from 147.67.12.4#53(ns3lux.europa.eu) in 15 ms
www.ecb.europa.eu. 300 IN CNAME www-ecb-europa-eu.ax4z.com.
;; Received 86 bytes from 156.154.65.109#53(pdns109.ultradns.net) in 11 ms
real 0m5.117s
user 0m0.011s
sys 0m0.035s
--
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
"One World. One Web. One Program." - Microsoft promotional advertisement
"Ein Volk, ein Reich, ein Fuhrer!" - Adolf Hitler
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