[REN-BGP-stats] Weekly Global R&E Routing Table Report

REN Routing Table Report cscora at frr.nsrc.org
Sat Oct 23 22:00:41 UTC 2021


This is an automated weekly mailing describing the state of the Global
Research & Education Routing Table as seen from NSRC's collector.

Daily listings are sent to ren-bgp-stats-all at lists.nsrc.org.

For historical data, please see https://bgp.nsrc.org.

If you have any comments please contact Philip Smith <philip at nsrc.org>.

Global R&E Routing Table Report   22:00 GMT Sat 23 Oct, 2021

Report Website:     https://bgp.nsrc.org/REN
Detailed Analysis:  https://bgp.nsrc.org/REN/Internet2/

Analysis Summary
----------------

BGP routing table entries examined:                               22728
    Prefixes after maximum aggregation (per Origin AS):           12543
    Deaggregation factor:                                          1.81
    Unique aggregates announced (without unneeded subnets):       14768
Total ASes present in the Internet Routing Table:                  2772
    Prefixes per ASN:                                              8.20
Origin-only ASes present in the Internet Routing Table:            2391
Origin ASes announcing only one prefix:                            1101
Transit ASes present in the Internet Routing Table:                 381
Transit-only ASes present in the Internet Routing Table:             51
Average AS path length visible in the Internet Routing Table:       3.3
    Max AS path length visible:                                      14
    Max AS path prepend of ASN ( 10497)                              11
Prefixes from unregistered ASNs in the Routing Table:                18
    Number of instances of unregistered ASNs:                        18
Number of 32-bit ASNs allocated by the RIRs:                      37624
Number of 32-bit ASNs visible in the Routing Table:                 619
Prefixes from 32-bit ASNs in the Routing Table:                    1822
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:              7
Number of addresses announced to Internet:                    289245300
    Equivalent to 17 /8s, 61 /16s and 136 /24s
    Percentage of available address space announced:                7.8
    Percentage of allocated address space announced:                7.8
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:        3055

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                     4735
    Total APNIC prefixes after maximum aggregation:                2338
    APNIC Deaggregation factor:                                    2.03
Prefixes being announced from the APNIC address blocks:            4810
    Unique aggregates announced from the APNIC address blocks:     2735
APNIC Region origin ASes present in the Internet Routing Table:     587
    APNIC Prefixes per ASN:                                        8.19
APNIC Region origin ASes announcing only one prefix:                250
APNIC Region transit ASes present in the Internet Routing Table:     66
Average APNIC Region AS path length visible:                        3.8
    Max APNIC Region AS path length visible:                         12
Number of APNIC region 32-bit ASNs visible in the Routing Table:    227
Number of APNIC addresses announced to Internet:               46715200
    Equivalent to 2 /8s, 200 /16s and 209 /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, 131072-151865
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:                     12097
    Total ARIN prefixes after maximum aggregation:                 6641
    ARIN Deaggregation factor:                                     1.82
Prefixes being announced from the ARIN address blocks:            11930
    Unique aggregates announced from the ARIN address blocks:      7989
ARIN Region origin ASes present in the Internet Routing Table:     1225
    ARIN Prefixes per ASN:                                         9.74
ARIN Region origin ASes announcing only one prefix:                 434
ARIN Region transit ASes present in the Internet Routing Table:     161
Average ARIN Region AS path length visible:                         2.9
    Max ARIN Region AS path length visible:                          13
Number of ARIN region 32-bit ASNs visible in the Routing Table:     155
Number of ARIN addresses announced to Internet:               175283540
    Equivalent to 10 /8s, 114 /16s and 157 /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, 393216-401308
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:                      3426
    Total RIPE prefixes after maximum aggregation:                 2753
    RIPE Deaggregation factor:                                     1.24
Prefixes being announced from the RIPE address blocks:             3512
    Unique aggregates announced from the RIPE address blocks:      2876
RIPE Region origin ASes present in the Internet Routing Table:      673
    RIPE Prefixes per ASN:                                         5.22
RIPE Region origin ASes announcing only one prefix:                 325
RIPE Region transit ASes present in the Internet Routing Table:     105
Average RIPE Region AS path length visible:                         3.6
    Max RIPE Region AS path length visible:                          14
Number of RIPE region 32-bit ASNs visible in the Routing Table:     132
Number of RIPE addresses announced to Internet:                59748032
    Equivalent to 3 /8s, 143 /16s and 174 /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
                       196608-213403
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:                    1537
    Total LACNIC prefixes after maximum aggregation:                618
    LACNIC Deaggregation factor:                                   2.49
Prefixes being announced from the LACNIC address blocks:           1548
    Unique aggregates announced from the LACNIC address blocks:     865
LACNIC Region origin ASes present in the Internet Routing Table:    180
    LACNIC Prefixes per ASN:                                       8.60
LACNIC Region origin ASes announcing only one prefix:                68
LACNIC Region transit ASes present in the Internet Routing Table:    24
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        12
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    78
Number of LACNIC addresses announced to Internet:               4629536
    Equivalent to 0 /8s, 70 /16s and 164 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-272796 + 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:                    915
    Total AfriNIC prefixes after maximum aggregation:               188
    AfriNIC Deaggregation factor:                                  4.87
Prefixes being announced from the AfriNIC address blocks:           921
    Unique aggregates announced from the AfriNIC address blocks:    296
AfriNIC Region origin ASes present in the Internet Routing Table:    52
    AfriNIC Prefixes per ASN:                                     17.71
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:   13
Average AfriNIC Region AS path length visible:                      3.5
    Max AfriNIC Region AS path length visible:                       10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   27
Number of AfriNIC addresses announced to Internet:              2867200
    Equivalent to 0 /8s, 43 /16s and 192 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & 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
  2907         620       2141     458  SINET-AS Research Organization of Infor
  7497         429        182      24  CSTNET-AS-AP Computer Network Informati
  1237         188         74     135  KREONET-AS-KR KISTI, KR
 58647         176         18       2  KAGAWAU-AS Kagawa University, JP
  7575         175        329     121  AARNET-AS-AP Australian Academic and Re
 55824         128         19      22  NKN-CORE-NW NKN Core Network, IN
  4538         126       4192      72  ERX-CERNET-BKB China Education and Rese
  4621          81         37      10  UNINET-AS-AP UNINET-, TH
  4762          65          4       1  MAHIDOL-BORDER-AS Mahidol University, T
 23570          59          5      11  INCHEON-AS-KR UNIVERSITY OF INCHEON, KR

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        2639       4477     997  AMAZON-02, US
 14618         536       3985     407  AMAZON-AES, US
 11537         338          3     204  INTERNET2-RESEARCH-EDU, US
  7896         250         51       7  NU-AS, US
   376         233        180     157  RISQ-AS, CA
   668         209        702     180  DNIC-AS-00668, US
  8075         206      11189     185  MICROSOFT-CORP-MSN-AS-BLOCK, US
  5786         196         16       1  UPRENET, PR
  2152         157        507      85  CSUNET-NW, US
 18558         137         18       4  NETBLK-RCOEK, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         276       1998     238  DFN Verein zur Foerderung eines Deutsch
   786         186       1774     183  JANET Jisc Services Limited, GB
  8895         177         24       4  ISU Internet Services Unit ISU, SA
   559         115        550     106  SWITCH Peering requests: peering at switch
  1103          98       1520      85  SURFNET-NL SURFnet, The Netherlands, NL
   137          82        677      77  ASGARR Consortium GARR, IT
   553          72        449      72  BELWUE BelWue-Koordination, DE
  2200          67        647      61  FR-RENATER Reseau National de telecommu
  2614          60         33      58  ROEDUNET, RO
  1930          57         81      52  RCCN Fundacao para a Ciencia e a Tecnol

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  1916         204        207      42  Associacao Rede Nacional de Ensino e Pe
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          94         24      54  Red Universitaria Nacional, CL
  1251          65         37      20  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  2715          60        102      40  Fundacao Carlos Chagas Filho de Amparo 
 52286          53          4      31  Columbus Networks Guatemala, GT
 61468          45          3      15  CEDIA, EC
 19611          44         17       2  Associacao Antonio Vieira - Unisinos, B
  4270          43         16       1  Red de Interconexion Universitaria, AR
 28614          38          2       2  Fundacao Universidade Regional de Blume

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2018         341        319      73  TENET-1, ZA
327687         132         28       3  RENU, UG
 36914         100         82       3  KENET-AS, KE
  2561          73          5      32  EUN, EG
  8094          50         48       4  PUKNET, ZA
327700          42         16       1  MoRENet, MZ
 37215          32          8       1  MAREN, MW
  6879          24          2       9  ENSTINET-, EG
 37182          14          8       1  TERNET, TZ
 37074          11          8       2  UG-AS, GH

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        2639       4477     997  AMAZON-02, US
  2907         620       2141     458  SINET-AS Research Organization of Infor
 14618         536       3985     407  AMAZON-AES, US
  7497         429        182      24  CSTNET-AS-AP Computer Network Informati
  2018         341        319      73  TENET-1, ZA
 11537         338          3     204  INTERNET2-RESEARCH-EDU, US
   680         276       1998     238  DFN Verein zur Foerderung eines Deutsch
  7896         250         51       7  NU-AS, US
   376         233        180     157  RISQ-AS, CA
   668         209        702     180  DNIC-AS-00668, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  7497         429          405  CSTNET-AS-AP Computer Network Information Cente
  2018         341          268  TENET-1, ZA
  7896         250          243  NU-AS, US
  5786         196          195  UPRENET, PR
 58647         176          174  KAGAWAU-AS Kagawa University, JP
  8895         177          173  ISU Internet Services Unit ISU, SA
  2907         620          162  SINET-AS Research Organization of Information a
  1916         204          162  Associacao Rede Nacional de Ensino e Pesquisa, 
 11537         338          134  INTERNET2-RESEARCH-EDU, US
 18558         137          133  NETBLK-RCOEK, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     14822  UNALLOCATED  140.163.0.0/16           10466  MAGPI, US
     14822  UNALLOCATED  140.163.0.0/17           10466  MAGPI, US
     14822  UNALLOCATED  140.163.6.0/24           10466  MAGPI, US
     14822  UNALLOCATED  140.163.64.0/24          10466  MAGPI, US
     14822  UNALLOCATED  140.163.70.0/24          10466  MAGPI, US
     14822  UNALLOCATED  140.163.128.0/17         10466  MAGPI, US
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
    394784  UNALLOCATED  192.107.242.0/24         40831  PHS, US
    396334  UNALLOCATED  205.143.136.0/21          5078  ONENET-AS-1, US
    396334  UNALLOCATED  205.143.136.0/24          5078  ONENET-AS-1, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             1103  SURFNET-NL SURFnet, The Netherlands, NL

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-dsua

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
103.151.24.0/24      Origin:     16509  AMAZON-02, US
103.151.24.0/24     Transit:     11537  INTERNET2-RESEARCH-EDU, US
192.31.196.0/24      Origin:       112  UNASSIGNED
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24       Origin:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24      Transit:     11537  INTERNET2-RESEARCH-EDU, US
192.107.242.0/24     Origin:    394784  UNASSIGNED
192.107.242.0/24    Transit:     40831  PHS, US
198.135.168.0/24     Origin:     14618  AMAZON-AES, US
198.135.168.0/24    Transit:     16509  AMAZON-02, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/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        /8:0        /9:1       /10:4       /11:7       /12:29      
/13:34      /14:81      /15:200     /16:2142    /17:455     /18:468     
/19:606     /20:978     /21:1010    /22:1573    /23:1712    /24:12795   
/25:84      /26:67      /27:122     /28:2       /29:51      /30:77      
/31:158     /32:72      

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 16509         701        2639  AMAZON-02, US
 14618         177         536  AMAZON-AES, US
  8895         172         177  ISU Internet Services Unit ISU, SA
 36914          86         100  KENET-AS, KE
 11537          72         338  INTERNET2-RESEARCH-EDU, US
 23024          53          56  OCDE, US
327700          36          42  MoRENet, MZ
     1          35         120  LVLT-1, US
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 25977          31          45  HCCS, US

Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:5         3:79        4:2         5:16        6:4         8:2      
  12:1        13:215      14:84       15:31       18:43       23:33     
  24:6        31:6        37:6        38:9        40:2        41:150    
  42:8        44:5        45:79       46:9        47:1        49:10     
  50:5        52:643      54:179      58:2        59:20       60:4      
  61:3        62:7        63:38       64:127      65:5        66:54     
  67:60       68:18       69:47       70:9        71:17       72:19     
  74:40       75:128      76:164      77:8        78:3        79:10     
  80:18       81:27       82:6        83:7        84:9        85:37     
  86:9        87:1        88:1        89:12       91:55       92:1      
  93:19       94:4        95:6        96:6        97:1        98:9      
  99:181     101:6       102:17      103:334     104:46      106:1      
 107:8       108:19      109:11      110:3       111:21      112:4      
 113:1       114:23      116:5       117:61      118:32      119:19     
 121:26      122:11      123:8       124:39      125:5       128:83     
 129:182     130:120     131:102     132:61      133:138     134:44     
 135:1       136:199     137:149     138:9       139:16      140:50     
 141:3       142:61      143:33      144:70      146:126     147:79     
 148:167     149:20      150:47      151:7       152:79      153:11     
 154:23      155:59      156:69      157:30      158:45      159:120    
 160:32      161:20      162:51      163:70      164:49      165:61     
 166:1       167:23      168:205     169:10      170:98      171:1      
 172:10      173:14      174:1       175:31      176:12      177:10     
 178:3       179:13      180:21      181:12      182:6       184:2      
 185:56      186:3       187:18      188:14      189:3       190:50     
 191:36      192:1495    193:258     194:123     195:87      196:179    
 197:5       198:513     199:313     200:254     201:39      202:645    
 203:427     204:386     205:199     206:200     207:194     208:90     
 209:134     210:184     211:14      212:172     213:13      214:7      
 216:129     217:14      218:25      219:8       220:17      222:5      
 223:2      

End of report


More information about the ren-bgp-stats mailing list