[sdnog] Weekly Routing Table Report
Yousra Abdalla
yousra.a.nasr at gmail.com
Wed Nov 13 12:40:45 SAST 2019
On Wed, Nov 13, 2019, 13:28 Ala Eldin Rifat / Quantum <a.rifat at q-ab.com>
wrote:
> Dears,,
>
>
>
> · It’s nice to ask questions kindly for more details,
> Clarification even just to get the Basic concept about something, pushed by
> intention of knowing, also to response, answer the questions gently too..
>
> · such interactions is one of the main purpose of the mailing
> list.
>
> · Some discussions may not be interested, related to someone,
> but that not mean It’s not useful totally
>
******************************
> - The reminder or the update of the weekly routing report is
> very important for me J
>
Ok good,,,can you please tell me WHY ? Maybe by simple example ? This what
I wanted to understand
Thanks in advance ..
*******************************
> · We’re looking for more positive discussions, initiatives and collaboration
> in our Mailing list ..
>
>
>
>
>
>
>
>
>
> Best Regards
>
>
>
>
>
> [image: Description: Logo #]
>
> Ala Eldin Rifat
>
> Block-4, Building-7
> Khartoum South, Sudan
>
> Mobile : +249912123099
>
> Email : a.rifat at q-ab.com
>
> Web : www.q-ab.com
>
>
>
> *From:* sdnog [mailto:sdnog-bounces at sdnog.sd] *On Behalf Of *Yousra
> Abdalla
> *Sent:* Tuesday, November 12, 2019 5:07 PM
> *To:* Samir Abdullatif
> *Cc:* Sudan NOG
> *Subject:* Re: [sdnog] Weekly Routing Table Report
>
>
>
> @Ahmed
>
> you said the opposite ..the main objective of the list is to discuss and
> share knowledge ...getting updates and announcements is just part of it ..
>
> So ...calm down dear ..and enjoy the discussion!
>
>
>
> @Samir
>
> thanks for the details ..as you mentioned I still need an example to
> understand at least one use of it.
>
>
>
> @philip
>
>
>
> "The global routing system affects us all, and has big impacts on our
> local network infrastructure too."
>
> Can you please explain more how's that?
>
>
>
> On Tue, Nov 12, 2019, 17:01 Samir Abdullatif <samir.s.omer at hotmail.com>
> wrote:
>
> Salam Yousra
>
>
>
> As you might be aware When an ISP or Autonomous System (AS) acquires a
> block of globally unique IP addresses (called a prefix), it must advertise
> it to the world (the global Internet routing table). This advertisement is
> needed in order to let all other ASes in the world know how to find out
> that the new prefix, and where to send any IP packets destined for it.
>
> One insight you will can find from such report is that you are going to
> notice the number of prefixes in the global internet routing table is
> always increasing. Of course one reason of this increase is the natural
> internet growth, however there is another reason more important to use
> network engineers is that ISPs often break down their prefixes into more
> smaller subnets and advertise them (like breaking down a /20 into multiple
> /22). typically an ISP should aggregate their prefixes into bigger blocks
> rather than de-aggregating them.
>
>
>
> Such information can be found in the report by by (No of nets/prefixes
> and MaxAgg).
>
>
>
> This is one example of course you can find more insight by going through
> the report documentation on the website.
>
> And if anyone on the list can share a story of or use case where the
> report helped him please share it with us.
>
>
>
>
>
> --
>
> Samir
>
>
>
>
> On Nov 11, 2019, at 11:25 AM, Yousra Abdalla <yousra.a.nasr at gmail.com>
> wrote:
>
> What is this weekly routing table report for? What the benefits of it?
>
> On Fri, Nov 8, 2019, 21:05 Routing Analysis Role Account <cscora at apnic.net>
> wrote:
> This is an automated weekly mailing describing the state of the Internet
> Routing Table as seen from APNIC's router in Japan.
>
> The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
> TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.
>
> Daily listings are sent to bgp-stats at lists.apnic.net
>
> For historical data, please see http://thyme.rand.apnic.net.
>
> If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
>
> Routing Table Report 04:00 +10GMT Sat 09 Nov, 2019
>
> Report Website: http://thyme.rand.apnic.net
> Detailed Analysis: http://thyme.rand.apnic.net/current/
>
> Analysis Summary
> ----------------
>
> BGP routing table entries examined: 781783
> Prefixes after maximum aggregation (per Origin AS): 297937
> Deaggregation factor: 2.62
> Unique aggregates announced (without unneeded subnets): 376869
> Total ASes present in the Internet Routing Table: 66078
> Prefixes per ASN: 11.83
> Origin-only ASes present in the Internet Routing Table: 56797
> Origin ASes announcing only one prefix: 24298
> Transit ASes present in the Internet Routing Table: 9281
> Transit-only ASes present in the Internet Routing Table: 268
> Average AS path length visible in the Internet Routing Table: 4.4
> Max AS path length visible: 35
> Max AS path prepend of ASN ( 44555) 27
> Prefixes from unregistered ASNs in the Routing Table: 27
> Number of instances of unregistered ASNs: 27
> Number of 32-bit ASNs allocated by the RIRs: 29439
> Number of 32-bit ASNs visible in the Routing Table: 24053
> Prefixes from 32-bit ASNs in the Routing Table: 109264
> Number of bogon 32-bit ASNs visible in the Routing Table: 11
> Special use prefixes present in the Routing Table: 0
> Prefixes being announced from unallocated address space: 360
> Number of addresses announced to Internet: 2841827200
> Equivalent to 169 /8s, 98 /16s and 215 /24s
> Percentage of available address space announced: 76.8
> Percentage of allocated address space announced: 76.8
> Percentage of available address space allocated: 100.0
> Percentage of address space in use by end-sites: 99.4
> Total number of prefixes smaller than registry allocations: 260296
>
> APNIC Region Analysis Summary
> -----------------------------
>
> Prefixes being announced by APNIC Region ASes: 209880
> Total APNIC prefixes after maximum aggregation: 60956
> APNIC Deaggregation factor: 3.44
> Prefixes being announced from the APNIC address blocks: 204135
> Unique aggregates announced from the APNIC address blocks: 84988
> APNIC Region origin ASes present in the Internet Routing Table: 10169
> APNIC Prefixes per ASN: 20.07
> APNIC Region origin ASes announcing only one prefix: 2827
> APNIC Region transit ASes present in the Internet Routing Table: 1512
> Average APNIC Region AS path length visible: 4.6
> Max APNIC Region AS path length visible: 25
> Number of APNIC region 32-bit ASNs visible in the Routing Table: 5183
> Number of APNIC addresses announced to Internet: 771228032
> Equivalent to 45 /8s, 248 /16s and 1 /24s
> APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
> (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
> 58368-59391, 63488-64098, 64297-64395, 131072-141625
> APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
> 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
> 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
> 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
> 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
> 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
> 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
> 222/8, 223/8,
>
> ARIN Region Analysis Summary
> ----------------------------
>
> Prefixes being announced by ARIN Region ASes: 230178
> Total ARIN prefixes after maximum aggregation: 106890
> ARIN Deaggregation factor: 2.15
> Prefixes being announced from the ARIN address blocks: 227726
> Unique aggregates announced from the ARIN address blocks: 108693
> ARIN Region origin ASes present in the Internet Routing Table: 18642
> ARIN Prefixes per ASN: 12.22
> ARIN Region origin ASes announcing only one prefix: 6925
> ARIN Region transit ASes present in the Internet Routing Table: 1921
> Average ARIN Region AS path length visible: 3.9
> Max ARIN Region AS path length visible: 24
> Number of ARIN region 32-bit ASNs visible in the Routing Table: 2989
> Number of ARIN addresses announced to Internet: 1069086720
> Equivalent to 63 /8s, 184 /16s and 248 /24s
> ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
> (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
> 3354-4607, 4865-5119, 5632-6655, 6912-7466
> 7723-8191, 10240-12287, 13312-15359, 16384-17407
> 18432-20479, 21504-23551, 25600-26591,
> 26624-27647, 29696-30719, 31744-33791
> 35840-36863, 39936-40959, 46080-47103
> 53248-55295, 62464-63487, 64198-64296, 393216-399260
> ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
> 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
> 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
> 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
> 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8,
> 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8,
> 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8,
> 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8,
> 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
> 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
> 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
> 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
> 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
> 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
> 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
> 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
>
>
> RIPE Region Analysis Summary
> ----------------------------
>
> Prefixes being announced by RIPE Region ASes: 218407
> Total RIPE prefixes after maximum aggregation: 102481
> RIPE Deaggregation factor: 2.13
> Prefixes being announced from the RIPE address blocks: 214977
> Unique aggregates announced from the RIPE address blocks: 127753
> RIPE Region origin ASes present in the Internet Routing Table: 26583
> RIPE Prefixes per ASN: 8.09
> RIPE Region origin ASes announcing only one prefix: 11704
> RIPE Region transit ASes present in the Internet Routing Table: 3749
> Average RIPE Region AS path length visible: 4.5
> Max RIPE Region AS path length visible: 34
> Number of RIPE region 32-bit ASNs visible in the Routing Table: 8644
> Number of RIPE addresses announced to Internet: 722427648
> Equivalent to 43 /8s, 15 /16s and 95 /24s
> RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
> (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
> 6656-6911, 8192-9215, 12288-13311, 15360-16383
> 20480-21503, 24576-25599, 28672-29695
> 30720-31743, 33792-35839, 38912-39935
> 40960-45055, 47104-52223, 56320-58367
> 59392-61439, 61952-62463, 64396-64495
> 196608-210331
> RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
> 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
> 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
> 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
> 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
> 193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
>
> LACNIC Region Analysis Summary
> ------------------------------
>
> Prefixes being announced by LACNIC Region ASes: 101615
> Total LACNIC prefixes after maximum aggregation: 23220
> LACNIC Deaggregation factor: 4.38
> Prefixes being announced from the LACNIC address blocks: 102745
> Unique aggregates announced from the LACNIC address blocks: 44941
> LACNIC Region origin ASes present in the Internet Routing Table: 9067
> LACNIC Prefixes per ASN: 11.33
> LACNIC Region origin ASes announcing only one prefix: 2369
> LACNIC Region transit ASes present in the Internet Routing Table: 1715
> Average LACNIC Region AS path length visible: 5.3
> Max LACNIC Region AS path length visible: 35
> Number of LACNIC region 32-bit ASNs visible in the Routing Table: 6620
> Number of LACNIC addresses announced to Internet: 173949696
> Equivalent to 10 /8s, 94 /16s and 67 /24s
> LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
> 61440-61951, 64099-64197, 262144-270748 + ERX
> transfers
> LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
> 191/8, 200/8, 201/8,
>
> AfriNIC Region Analysis Summary
> -------------------------------
>
> Prefixes being announced by AfriNIC Region ASes: 21675
> Total AfriNIC prefixes after maximum aggregation: 4368
> AfriNIC Deaggregation factor: 4.96
> Prefixes being announced from the AfriNIC address blocks: 31840
> Unique aggregates announced from the AfriNIC address blocks: 10190
> AfriNIC Region origin ASes present in the Internet Routing Table: 1334
> AfriNIC Prefixes per ASN: 23.87
> AfriNIC Region origin ASes announcing only one prefix: 473
> AfriNIC Region transit ASes present in the Internet Routing Table: 260
> Average AfriNIC Region AS path length visible: 4.9
> Max AfriNIC Region AS path length visible: 23
> Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 617
> Number of AfriNIC addresses announced to Internet: 104797440
> Equivalent to 6 /8s, 63 /16s and 21 /24s
> AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
> AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
>
>
> APNIC Region per AS prefix count summary
> ----------------------------------------
>
> ASN No of nets /20 equiv MaxAgg Description
> 7545 5091 630 590 TPG-INTERNET-AP TPG Telecom
> Limited, AU
> 4538 4681 4192 73 ERX-CERNET-BKB China Education and
> Rese
> 7552 3265 1331 27 VIETEL-AS-AP Viettel Group, VN
> 45899 3082 1772 108 VNPT-AS-VN VNPT Corp, VN
> 7713 2712 799 489 TELKOMNET-AS-AP PT Telekomunikasi
> Indon
> 9808 2615 9043 63 CMNET-GD Guangdong Mobile
> Communication
> 9829 2531 1495 530 BSNL-NIB National Internet
> Backbone, IN
> 4766 2384 11113 665 KIXS-AS-KR Korea Telecom, KR
> 9498 2203 433 211 BBIL-AP BHARTI Airtel Ltd., IN
> 4755 2149 442 196 TATACOMM-AS TATA Communications
> formerl
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
>
> ARIN Region per AS prefix count summary
> ---------------------------------------
>
> ASN No of nets /20 equiv MaxAgg Description
> 7155 4055 280 27 VIASAT-SP-BACKBONE - ViaSat,Inc.,
> US
> 11492 3753 247 674 CABLEONE - CABLE ONE, INC., US
> 16509 3633 7375 1570 AMAZON-02 - Amazon.com, Inc., US
> 22773 3496 2970 155 ASN-CXA-ALL-CCI-22773-RDC - Cox
> Communi
> 6327 3357 1324 93 SHAW - Shaw Communications Inc., CA
> 16625 2900 1534 2070 AKAMAI-AS - Akamai Technologies,
> Inc.,
> 30036 2239 354 121 MEDIACOM-ENTERPRISE-BUSINESS -
> Mediacom
> 20115 2134 2769 517 CHARTER-20115 - Charter
> Communications,
> 209 2114 5070 533 CENTURYLINK-US-LEGACY-QWEST -
> CenturyLi
> 18566 2068 405 103 MEGAPATH5-US - MegaPath
> Corporation, US
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
>
> RIPE Region per AS prefix count summary
> ---------------------------------------
>
> ASN No of nets /20 equiv MaxAgg Description
> 12479 5639 1618 136 UNI2-AS, ES
> 39891 4034 219 19 ALJAWWALSTC-AS, SA
> 8551 2980 379 46 BEZEQ-INTERNATIONAL-AS Bezeqint
> Interne
> 20940 2796 475 1965 AKAMAI-ASN1, US
> 31334 2630 484 13 KABELDEUTSCHLAND-AS, DE
> 12389 2418 2234 698 ROSTELECOM-AS, RU
> 9121 2155 1691 18 TTNET, TR
> 34984 2153 349 536 TELLCOM-AS, TR
> 9009 1927 207 1055 M247, GB
> 13188 1604 100 47 TRIOLAN, UA
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
>
> LACNIC Region per AS prefix count summary
> -----------------------------------------
>
> ASN No of nets /20 equiv MaxAgg Description
> 8151 6224 3330 612 Uninet S.A. de C.V., MX
> 10620 3355 532 466 Telmex Colombia S.A., CO
> 11830 2697 370 54 Instituto Costarricense de
> Electricidad
> 6503 1688 327 387 Axtel, S.A.B. de C.V., MX
> 7303 1477 1024 275 Telecom Argentina S.A., AR
> 28573 1202 2232 195 CLARO S.A., BR
> 13999 1114 486 244 Mega Cable, S.A. de C.V., MX
> 6147 1103 380 37 Telefonica del Peru S.A.A., PE
> 3816 1086 556 135 COLOMBIA TELECOMUNICACIONES S.A.
> ESP, C
> 11172 934 110 59 Alestra, S. de R.L. de C.V., MX
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
>
> AfriNIC Region per AS prefix count summary
> ------------------------------------------
>
> ASN No of nets /20 equiv MaxAgg Description
> 24863 1175 393 23 LINKdotNET-AS, EG
> 36992 1021 1535 73 ETISALAT-MISR, EG
> 24835 959 618 25 RAYA-AS, EG
> 36903 868 438 95 MT-MPLS, MA
> 8452 642 1857 19 TE-AS TE-AS, EG
> 6713 626 1863 34 IAM-AS, MA
> 29571 522 68 11 ORANGE-COTE-IVOIRE, CI
> 37342 482 32 1 MOVITEL, MZ
> 15399 410 45 10 WANANCHI-, KE
> 23889 366 231 15 MauritiusTelecom, MU
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
>
> Global Per AS prefix count summary
> ----------------------------------
>
> ASN No of nets /20 equiv MaxAgg Description
> 8151 6224 3330 612 Uninet S.A. de C.V., MX
> 12479 5639 1618 136 UNI2-AS, ES
> 7545 5091 630 590 TPG-INTERNET-AP TPG Telecom
> Limited, AU
> 4538 4681 4192 73 ERX-CERNET-BKB China Education and
> Rese
> 7155 4055 280 27 VIASAT-SP-BACKBONE - ViaSat,Inc.,
> US
> 39891 4034 219 19 ALJAWWALSTC-AS, SA
> 11492 3753 247 674 CABLEONE - CABLE ONE, INC., US
> 16509 3633 7375 1570 AMAZON-02 - Amazon.com, Inc., US
> 22773 3496 2970 155 ASN-CXA-ALL-CCI-22773-RDC - Cox
> Communi
> 6327 3357 1324 93 SHAW - Shaw Communications Inc., CA
>
> Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
>
> Global Per AS Maximum Aggr summary
> ----------------------------------
>
> ASN No of nets Net Savings Description
> 12479 5639 5503 UNI2-AS, ES
> 4538 4681 4608 ERX-CERNET-BKB China Education and
> Research Net
> 7545 5091 4501 TPG-INTERNET-AP TPG Telecom Limited, AU
> 7155 4055 4028 VIASAT-SP-BACKBONE - ViaSat,Inc., US
> 39891 4034 4015 ALJAWWALSTC-AS, SA
> 22773 3496 3341 ASN-CXA-ALL-CCI-22773-RDC - Cox
> Communications
> 6327 3357 3264 SHAW - Shaw Communications Inc., CA
> 7552 3265 3238 VIETEL-AS-AP Viettel Group, VN
> 11492 3753 3079 CABLEONE - CABLE ONE, INC., US
> 45899 3082 2974 VNPT-AS-VN VNPT Corp, VN
>
> Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
>
> List of Unregistered Origin ASNs (Global)
> -----------------------------------------
>
> Bad AS Designation Network Transit AS Description
> 230105 UNALLOCATED 38.110.79.0/24 23015 CMC180-TOR-AS -
> Cambridge Merc
> 64501 DOCUMENT 45.174.25.0/24 267817 UNKNOWN
> 260984 UNALLOCATED 45.175.186.0/23 16735 ALGAR TELECOM
> S/A, BR
> 266842 UNALLOCATED 45.238.156.0/22 265680 HNTELCO S.A, HN
> 65550 DOCUMENT 81.8.34.0/24 15924
> BORUSANTELEKOM-AS, TR
> 65550 DOCUMENT 81.8.35.0/24 15924
> BORUSANTELEKOM-AS, TR
> 64339 UNALLOCATED 143.0.108.0/22 18747 IFX18747 - IFX
> Corporation, US
> 64355 UNALLOCATED 156.40.196.0/24 30387 NIH-NET-NCCS -
> National Instit
> 64011 UNALLOCATED 166.133.128.0/18 20057
> ATT-MOBILITY-LLC-AS20057 - AT&
> 64011 UNALLOCATED 166.133.192.0/18 20057
> ATT-MOBILITY-LLC-AS20057 - AT&
>
> Complete listing at http://thyme.rand.apnic.net/current/data-badAS
>
> Advertised Unallocated Addresses
> --------------------------------
>
> Network Origin AS Description
> 23.136.224.0/24 15206 6X7 - 6x7 Networks LLC, ZZ
> 27.100.7.0/24 56096 UNKNOWN
> 27.126.156.0/22 55827 UNKNOWN
> 27.126.156.0/23 55827 UNKNOWN
> 27.126.158.0/23 55827 UNKNOWN
> 31.217.248.0/23 209372 IPMEN, GB
> 31.217.250.0/23 209372 IPMEN, GB
> 31.217.252.0/23 209372 IPMEN, GB
> 31.217.254.0/23 209372 IPMEN, GB
> 37.77.148.0/23 209372 IPMEN, GB
>
> Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA
>
> Number of prefixes announced per prefix length (Global)
> -------------------------------------------------------
>
> /1:0 /2:0 /3:0 /4:0 /5:0 /6:0
> /7:0 /8:10 /9:11 /10:38 /11:100 /12:290
> /13:577 /14:1159 /15:1921 /16:13314 /17:8089 /18:13796
> /19:25732 /20:40311 /21:47338 /22:97473 /23:79192 /24:450872
> /25:1560 /26:0 /27:0 /28:0 /29:0 /30:0
> /31:0 /32:0
>
> Advertised prefixes smaller than registr
>
>
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