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

REN Routing Table Report cscora at frr.nsrc.org
Sat Aug 21 22:01:04 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 21 Aug, 2021

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

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

BGP routing table entries examined:                               22016
    Prefixes after maximum aggregation (per Origin AS):           12178
    Deaggregation factor:                                          1.81
    Unique aggregates announced (without unneeded subnets):       14388
Total ASes present in the Internet Routing Table:                  2755
    Prefixes per ASN:                                              7.99
Origin-only ASes present in the Internet Routing Table:            2362
Origin ASes announcing only one prefix:                            1087
Transit ASes present in the Internet Routing Table:                 393
Transit-only ASes present in the Internet Routing Table:             71
Average AS path length visible in the Internet Routing Table:       3.4
    Max AS path length visible:                                      14
    Max AS path prepend of ASN ( 10497)                              11
Prefixes from unregistered ASNs in the Routing Table:                23
    Number of instances of unregistered ASNs:                        23
Number of 32-bit ASNs allocated by the RIRs:                      36968
Number of 32-bit ASNs visible in the Routing Table:                 597
Prefixes from 32-bit ASNs in the Routing Table:                    1743
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:              6
Number of addresses announced to Internet:                    289103513
    Equivalent to 17 /8s, 59 /16s and 94 /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:        2748

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

Prefixes being announced by APNIC Region ASes:                     4718
    Total APNIC prefixes after maximum aggregation:                2317
    APNIC Deaggregation factor:                                    2.04
Prefixes being announced from the APNIC address blocks:            4779
    Unique aggregates announced from the APNIC address blocks:     2711
APNIC Region origin ASes present in the Internet Routing Table:     564
    APNIC Prefixes per ASN:                                        8.47
APNIC Region origin ASes announcing only one prefix:                236
APNIC Region transit ASes present in the Internet Routing Table:     63
Average APNIC Region AS path length visible:                        4.2
    Max APNIC Region AS path length visible:                         13
Number of APNIC region 32-bit ASNs visible in the Routing Table:    212
Number of APNIC addresses announced to Internet:               46886720
    Equivalent to 2 /8s, 203 /16s and 111 /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:                     11776
    Total ARIN prefixes after maximum aggregation:                 6389
    ARIN Deaggregation factor:                                     1.84
Prefixes being announced from the ARIN address blocks:            11650
    Unique aggregates announced from the ARIN address blocks:      7792
ARIN Region origin ASes present in the Internet Routing Table:     1234
    ARIN Prefixes per ASN:                                         9.44
ARIN Region origin ASes announcing only one prefix:                 440
ARIN Region transit ASes present in the Internet Routing Table:     166
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:     159
Number of ARIN addresses announced to Internet:               175130777
    Equivalent to 10 /8s, 112 /16s and 72 /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:                      3183
    Total RIPE prefixes after maximum aggregation:                 2705
    RIPE Deaggregation factor:                                     1.18
Prefixes being announced from the RIPE address blocks:             3257
    Unique aggregates announced from the RIPE address blocks:      2827
RIPE Region origin ASes present in the Internet Routing Table:      655
    RIPE Prefixes per ASN:                                         4.97
RIPE Region origin ASes announcing only one prefix:                 317
RIPE Region transit ASes present in the Internet Routing Table:     105
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:     126
Number of RIPE addresses announced to Internet:                59534720
    Equivalent to 3 /8s, 140 /16s and 109 /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:                    1482
    Total LACNIC prefixes after maximum aggregation:                591
    LACNIC Deaggregation factor:                                   2.51
Prefixes being announced from the LACNIC address blocks:           1487
    Unique aggregates announced from the LACNIC address blocks:     821
LACNIC Region origin ASes present in the Internet Routing Table:    177
    LACNIC Prefixes per ASN:                                       8.40
LACNIC Region origin ASes announcing only one prefix:                71
LACNIC Region transit ASes present in the Internet Routing Table:    26
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        11
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    75
Number of LACNIC addresses announced to Internet:               4748864
    Equivalent to 0 /8s, 72 /16s and 118 /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:                    834
    Total AfriNIC prefixes after maximum aggregation:               159
    AfriNIC Deaggregation factor:                                  5.25
Prefixes being announced from the AfriNIC address blocks:           837
    Unique aggregates announced from the AfriNIC address blocks:    231
AfriNIC Region origin ASes present in the Internet Routing Table:    49
    AfriNIC Prefixes per ASN:                                     17.08
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:                      3.1
    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:              2800896
    Equivalent to 0 /8s, 42 /16s and 189 /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         618       2155     456  SINET-AS Research Organization of Infor
  7497         435        214      25  CSTNET-AS-AP Computer Network Informati
  1237         188         74     135  KREONET-AS-KR KISTI, KR
  7575         179        330     125  AARNET-AS-AP Australian Academic and Re
 58647         176         18       2  KAGAWAU-AS Kagawa University, JP
  4538         125       4192      72  ERX-CERNET-BKB China Education and Rese
 55824         114         18      11  NKN-CORE-NW NKN Core Network, IN
  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        2549       4450     953  AMAZON-02, US
 14618         511       3967     381  AMAZON-AES, US
  7896         241         51       7  NU-AS, US
   376         234        180     158  RISQ-AS, CA
   668         206        698     178  DNIC-AS-00668, US
  8075         206      11189     185  MICROSOFT-CORP-MSN-AS-BLOCK, US
  5786         201         16       1  UPRENET, PR
  2152         156        507      85  CSUNET-NW, US
 18558         137         18       4  NETBLK-RCOEK, US
     1         120          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         186       1763     184  JANET Jisc Services Limited, GB
   559         116        550     107  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          66        647      61  FR-RENATER Reseau National de telecommu
  2614          62         32      59  ROEDUNET, RO
  1930          57         81      52  RCCN Fundacao para a Ciencia e a Tecnol
  1653          54        151      50  SUNET SUNET Swedish University Network,

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          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
 61468          45          3      15  CEDIA, EC
 19611          44         17       2  Associacao Antonio Vieira - Unisinos, B
  4270          42         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
  2018         337        319      74  TENET-1, ZA
327687         134         28       3  RENU, UG
 36914          97         82       3  KENET-AS, KE
  8094          55         48       4  PUKNET, ZA
327700          39         16       1  MoRENet, MZ
 37215          32          8       1  MAREN, MW
  6879          24          2       9  ENSTINET-, EG
 37182          12          8       1  TERNET, TZ
 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        2549       4450     953  AMAZON-02, US
  2907         618       2155     456  SINET-AS Research Organization of Infor
 14618         511       3967     381  AMAZON-AES, US
  7497         435        214      25  CSTNET-AS-AP Computer Network Informati
  2018         337        319      74  TENET-1, ZA
   680         273       1996     235  DFN Verein zur Foerderung eines Deutsch
  7896         241         51       7  NU-AS, US
   376         234        180     158  RISQ-AS, CA
   668         206        698     178  DNIC-AS-00668, US
  8075         206      11189     185  MICROSOFT-CORP-MSN-AS-BLOCK, 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         435          410  CSTNET-AS-AP Computer Network Information Cente
  2018         337          263  TENET-1, ZA
  7896         241          234  NU-AS, US
  5786         201          200  UPRENET, PR
 58647         176          174  KAGAWAU-AS Kagawa University, JP
  2907         618          162  SINET-AS Research Organization of Information a
  1916         204          162  Associacao Rede Nacional de Ensino e Pesquisa, 
 18558         137          133  NETBLK-RCOEK, US
327687         134          131  RENU, UG
 14618         511          130  AMAZON-AES, 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
     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

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
192.107.242.0/24     Origin:    394784  UNASSIGNED
                    Transit:     40831  PHS, US
198.135.168.0/24     Origin:     14618  AMAZON-AES, US
                    Transit:     16509  AMAZON-02, US
205.166.145.0/24     Origin:    394784  UNASSIGNED
                    Transit:     40831  PHS, 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      /15:195     /16:2142    /17:449     /18:459     
/19:619     /20:979     /21:1010    /22:1556    /23:1694    /24:12451   
/25:51      /26:62      /27:113     /28:1       /29:49      /30:2       
/31:27      /32:1       

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

   ASN  No of nets  Total ann.  Description
 16509         683        2549  AMAZON-02, US
 14618         167         511  AMAZON-AES, US
 36914          84          97  KENET-AS, KE
 23024          53          56  OCDE, US
     1          35         120  LVLT-1, US
327700          33          39  MoRENet, MZ
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 25977          31          45  HCCS, US
263282          30          37  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
 27609          29          45  USC-UNIVERSITY-HOSPITAL, 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        13:214      14:84       15:22       18:41       23:29     
  24:6        31:6        37:6        38:9        40:2        41:145    
  42:25       44:5        45:71       46:10       47:1        49:10     
  50:5        52:643      54:148      58:2        59:20       60:4      
  61:3        62:6        63:38       64:129      65:7        66:54     
  67:56       68:18       69:47       70:9        71:17       72:16     
  74:40       75:128      76:164      77:8        78:3        79:10     
  80:14       81:29       82:5        83:7        84:5        85:37     
  86:9        87:1        88:1        89:10       91:49       92:1      
  93:19       94:4        95:6        96:6        97:1        98:8      
  99:178     101:2       102:9       103:304     104:49      106:1      
 107:8       108:19      109:8       110:3       111:21      112:4      
 113:1       114:23      116:5       117:61      118:32      119:19     
 121:26      122:11      123:8       124:42      125:13      128:81     
 129:180     130:125     131:109     132:60      133:137     134:98     
 135:1       136:204     137:151     138:11      139:16      140:51     
 141:3       142:61      143:41      144:68      146:126     147:66     
 148:167     149:16      150:46      151:7       152:77      153:11     
 154:25      155:57      156:66      157:30      158:48      159:120    
 160:32      161:19      162:51      163:70      164:31      165:61     
 166:1       167:21      168:169     169:10      170:95      171:1      
 172:10      173:19      174:1       175:31      176:12      177:10     
 178:3       179:13      180:21      181:11      182:6       184:7      
 185:51      186:3       187:18      188:14      189:6       190:48     
 191:36      192:1490    193:204     194:124     195:60      196:174    
 197:5       198:508     199:309     200:256     201:39      202:637    
 203:434     204:386     205:203     206:198     207:190     208:90     
 209:131     210:184     211:14      212:40      213:13      214:7      
 216:115     217:15      218:26      219:8       220:16      222:4      
 223:2      

End of report


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