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

REN Routing Table Report cscora at frr.nsrc.org
Sat May 8 22:00:17 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 08 May, 2021

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

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

BGP routing table entries examined:                               22322
    Prefixes after maximum aggregation (per Origin AS):           12178
    Deaggregation factor:                                          1.83
    Unique aggregates announced (without unneeded subnets):       14387
Total ASes present in the Internet Routing Table:                  2770
    Prefixes per ASN:                                              8.06
Origin-only ASes present in the Internet Routing Table:            2372
Origin ASes announcing only one prefix:                            1097
Transit ASes present in the Internet Routing Table:                 398
Transit-only ASes present in the Internet Routing Table:             62
Average AS path length visible in the Internet Routing Table:       3.3
    Max AS path length visible:                                      15
    Max AS path prepend of ASN ( 10497)                              11
Prefixes from unregistered ASNs in the Routing Table:                15
    Number of instances of unregistered ASNs:                        15
Number of 32-bit ASNs allocated by the RIRs:                      35990
Number of 32-bit ASNs visible in the Routing Table:                 592
Prefixes from 32-bit ASNs in the Routing Table:                    1651
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:              2
Number of addresses announced to Internet:                    280517912
    Equivalent to 16 /8s, 184 /16s and 93 /24s
    Percentage of available address space announced:                7.6
    Percentage of allocated address space announced:                7.6
    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:        3128

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

Prefixes being announced by APNIC Region ASes:                     4705
    Total APNIC prefixes after maximum aggregation:                2377
    APNIC Deaggregation factor:                                    1.98
Prefixes being announced from the APNIC address blocks:            4754
    Unique aggregates announced from the APNIC address blocks:     2767
APNIC Region origin ASes present in the Internet Routing Table:     575
    APNIC Prefixes per ASN:                                        8.27
APNIC Region origin ASes announcing only one prefix:                248
APNIC Region transit ASes present in the Internet Routing Table:     64
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         13
Number of APNIC region 32-bit ASNs visible in the Routing Table:    216
Number of APNIC addresses announced to Internet:               47144768
    Equivalent to 2 /8s, 207 /16s and 95 /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, 131072-147769
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:                     11531
    Total ARIN prefixes after maximum aggregation:                 6229
    ARIN Deaggregation factor:                                     1.85
Prefixes being announced from the ARIN address blocks:            11428
    Unique aggregates announced from the ARIN address blocks:      7644
ARIN Region origin ASes present in the Internet Routing Table:     1227
    ARIN Prefixes per ASN:                                         9.31
ARIN Region origin ASes announcing only one prefix:                 435
ARIN Region transit ASes present in the Internet Routing Table:     165
Average ARIN Region AS path length visible:                         3.0
    Max ARIN Region AS path length visible:                          15
Number of ARIN region 32-bit ASNs visible in the Routing Table:     145
Number of ARIN addresses announced to Internet:               166018200
    Equivalent to 9 /8s, 229 /16s and 60 /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:                      3437
    Total RIPE prefixes after maximum aggregation:                 2776
    RIPE Deaggregation factor:                                     1.24
Prefixes being announced from the RIPE address blocks:             3497
    Unique aggregates announced from the RIPE address blocks:      2840
RIPE Region origin ASes present in the Internet Routing Table:      674
    RIPE Prefixes per ASN:                                         5.19
RIPE Region origin ASes announcing only one prefix:                 317
RIPE Region transit ASes present in the Internet Routing Table:     109
Average RIPE Region AS path length visible:                         3.7
    Max RIPE Region AS path length visible:                          14
Number of RIPE region 32-bit ASNs visible in the Routing Table:     129
Number of RIPE addresses announced to Internet:                59811328
    Equivalent to 3 /8s, 144 /16s and 166 /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:                    1465
    Total LACNIC prefixes after maximum aggregation:                594
    LACNIC Deaggregation factor:                                   2.47
Prefixes being announced from the LACNIC address blocks:           1469
    Unique aggregates announced from the LACNIC address blocks:     831
LACNIC Region origin ASes present in the Internet Routing Table:    180
    LACNIC Prefixes per ASN:                                       8.16
LACNIC Region origin ASes announcing only one prefix:                74
LACNIC Region transit ASes present in the Internet Routing Table:    28
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        12
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    77
Number of LACNIC addresses announced to Internet:               4755520
    Equivalent to 0 /8s, 72 /16s and 144 /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:                   1169
    Total AfriNIC prefixes after maximum aggregation:               188
    AfriNIC Deaggregation factor:                                  6.22
Prefixes being announced from the AfriNIC address blocks:          1172
    Unique aggregates announced from the AfriNIC address blocks:    303
AfriNIC Region origin ASes present in the Internet Routing Table:    49
    AfriNIC Prefixes per ASN:                                     23.92
AfriNIC Region origin ASes announcing only one prefix:               23
AfriNIC Region transit ASes present in the Internet Routing Table:   12
Average AfriNIC Region AS path length visible:                      3.3
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   25
Number of AfriNIC addresses announced to Internet:              2787584
    Equivalent to 0 /8s, 42 /16s and 137 /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         619       2155     456  SINET-AS Research Organization of Infor
  7497         444        233      33  CSTNET-AS-AP Computer Network Informati
  1237         189         75     139  KREONET-AS-KR KISTI, KR
  7575         187        331     133  AARNET-AS-AP Australian Academic and Re
 58647         176         18       2  KAGAWAU-AS Kagawa University, JP
 55824         128         19      22  NKN-CORE-NW NKN Core Network, IN
  4538         123       4192      72  ERX-CERNET-BKB China Education and Rese
  4621          83         37      11  UNINET-AS-AP UNINET-, TH
 23570          59          5      11  INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
  1659          57       1450      34  ERX-TANET-ASN1 Taiwan Academic Network 

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        2360       4297     848  AMAZON-02, US
 14618         475       3980     351  AMAZON-AES, US
  7896         260         51       7  NU-AS, US
   376         236        180     158  RISQ-AS, CA
   668         209        702     180  DNIC-AS-00668, US
  5786         198         16       1  UPRENET, PR
  8075         192       9141     178  MICROSOFT-CORP-MSN-AS-BLOCK, US
  2152         160        507      92  CSUNET-NW, US
 18558         136         18       4  NETBLK-RCOEK, US
     1         117          1      41  LVLT-1, 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         273       1996     235  DFN Verein zur Foerderung eines Deutsch
   786         187       1787     185  JANET Jisc Services Limited, GB
  8895         172         24       4  ISU Internet Services Unit (ISU), SA
   559         116        550     107  SWITCH Peering requests: (peering at switc
  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      62  FR-RENATER Reseau National de telecommu
  2614          62         32      59  ROEDUNET, RO
  1930          56         82      51  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        215      41  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          67         37      20  FUNDACAO DE AMPARO A PESQUISA DO ESTADO
  2715          60        102      40  Fundacao Carlos Chagas Filho de Amparo 
 19611          45         17       2  Associacao Antonio Vieira - Unisinos, B
 61468          45          3      15  CEDIA, EC
  4270          44         16       1  Red de Interconexion Universitaria, AR
 28614          38          2       2  Fundacao Universidade Regional de Blume
 28571          37         26      15  UNIVERSIDADE DE SAO PAULO, BR

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
 36914         391         82       3  KENET-AS, KE
  2018         325        319      74  TENET-1, ZA
327687         132         28       3  RENU, UG
  2561          74          5      34  EUN, EG
  8094          55         48       4  PUKNET, ZA
327700          38         16       1  MoRENet, MZ
 37215          29          8       1  MAREN, MW
  6879          24          2       9  ENSTINET-, EG
 37074          11          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA

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        2360       4297     848  AMAZON-02, US
  2907         619       2155     456  SINET-AS Research Organization of Infor
 14618         475       3980     351  AMAZON-AES, US
  7497         444        233      33  CSTNET-AS-AP Computer Network Informati
 36914         391         82       3  KENET-AS, KE
  2018         325        319      74  TENET-1, ZA
   680         273       1996     235  DFN Verein zur Foerderung eines Deutsch
  7896         260         51       7  NU-AS, US
   376         236        180     158  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         444          411  CSTNET-AS-AP Computer Network Information Cente
 36914         391          388  KENET-AS, KE
  7896         260          253  NU-AS, US
  2018         325          251  TENET-1, ZA
  5786         198          197  UPRENET, PR
 58647         176          174  KAGAWAU-AS Kagawa University, JP
  8895         172          168  ISU Internet Services Unit (ISU), SA
  2907         619          163  SINET-AS Research Organization of Information a
  1916         204          163  Associacao Rede Nacional de Ensino e Pesquisa, 
 18558         136          132  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
     36843  UNALLOCATED  64.56.80.0/23            11096  FLORIDANET, US
     19658  UNALLOCATED  65.205.131.0/24          11096  FLORIDANET, US
     36843  UNALLOCATED  108.59.20.0/24           11096  FLORIDANET, US
     36843  UNALLOCATED  108.59.23.0/24           11096  FLORIDANET, US
     36843  UNALLOCATED  131.91.183.0/24          11096  FLORIDANET, US
     36843  UNALLOCATED  131.91.252.0/22          11096  FLORIDANET, US
     36843  UNALLOCATED  146.201.218.0/24         11096  FLORIDANET, US
     36843  UNALLOCATED  146.201.219.0/24         11096  FLORIDANET, US
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
     36843  UNALLOCATED  162.223.23.0/24          11096  FLORIDANET, 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
192.31.196.0/24      Origin:       112  UNASSIGNED
                    Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24       Origin:      1103  SURFNET-NL SURFnet, The Netherlands, NL
                    Transit:     11537  INTERNET2-RESEARCH-EDU, 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       /12:21      
/13:33      /14:81      /15:195     /16:2150    /17:454     /18:461     
/19:623     /20:976     /21:1022    /22:1579    /23:1675    /24:12720   
/25:83      /26:66      /27:124     /28:1       /29:46      /30:0       
/31:0       /32:0       

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

   ASN  No of nets  Total ann.  Description
 16509         651        2360  AMAZON-02, US
 36914         363         391  KENET-AS, KE
  8895         167         172  ISU Internet Services Unit (ISU), SA
 14618         153         475  AMAZON-AES, US
 23024          53          56  OCDE, US
     1          32         117  LVLT-1, US
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
327700          32          38  MoRENet, MZ
 25977          31          45  HCCS, US
263282          30          37  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN

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

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

   1:4         3:68        4:2         5:15        6:4         8:2      
  12:1        13:217      14:84       15:11       18:41       23:22     
  24:6        31:6        34:1        37:6        38:9        40:3      
  41:229      42:25       44:5        45:69       46:9        47:1      
  49:10       50:4        52:611      54:115      58:2        59:20     
  60:4        61:4        62:7        63:34       64:118      65:7      
  66:49       67:57       68:18       69:41       70:8        71:17     
  72:17       74:37       75:128      76:166      77:6        78:3      
  79:10       80:14       81:32       82:5        83:8        84:9      
  85:37       86:9        87:1        88:2        89:11       91:53     
  92:1        93:12       94:4        95:4        96:6        97:1      
  98:8        99:178     101:6       102:10      103:317     104:42     
 106:1       107:8       108:19      109:8       110:3       111:21     
 112:4       114:23      115:1       116:5       117:63      118:35     
 119:19      121:29      122:11      123:8       124:40      125:13     
 128:79      129:225     130:111     131:109     132:60      133:137    
 134:91      135:1       136:200     137:156     138:14      139:16     
 140:50      141:3       142:61      143:38      144:81      146:126    
 147:68      148:167     149:16      150:44      151:6       152:77     
 153:11      154:25      155:58      156:64      157:30      158:48     
 159:117     160:33      161:19      162:46      163:70      164:48     
 165:20      166:1       167:17      168:159     169:9       170:93     
 171:1       172:8       173:21      174:1       175:32      176:11     
 177:7       178:2       179:13      180:21      181:11      182:6      
 184:7       185:49      186:3       187:18      188:14      189:6      
 190:44      191:36      192:1484    193:255     194:145     195:103    
 196:170     197:182     198:507     199:305     200:253     201:39     
 202:590     203:409     204:385     205:202     206:197     207:191    
 208:84      209:131     210:187     211:14      212:165     213:13     
 214:7       216:93      217:16      218:26      219:8       220:24     
 222:4       223:2      

End of report


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