[REN-BGP-stats] Weekly Global IPv4 R&E Routing Table Report

REN Routing Table Report cscora at frr.nsrc.org
Sat Jan 29 22:00:33 UTC 2022


This is an automated weekly mailing describing the state of the IPv4
Research & Education Routing Table received by NSRC's collector
from Internet2's network.

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>.

IPv4 R&E Routing Table Report   22:00 GMT Sat 29 Jan, 2022

  BGP Table (R&E) as seen at Internet2.

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

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

BGP routing table entries examined:                               22200
    Prefixes after maximum aggregation (per Origin AS):           12182
    Deaggregation factor:                                          1.82
    Unique aggregates announced (without unneeded subnets):       14412
    Number of IPv4 prefixes with a valid ROA:                      7046
    Number of IPv4 prefixes with an invalid ROA:                     33
    Number of IPv4 prefixes with no ROA:                          15121
Total ASes present in the Internet Routing Table:                  2759
    Prefixes per ASN:                                              8.05
Origin-only ASes present in the Internet Routing Table:            2388
Origin ASes announcing only one prefix:                            1095
Transit ASes present in the Internet Routing Table:                 371
Transit-only ASes present in the Internet Routing Table:             50
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:                 3
    Number of instances of unregistered ASNs:                         3
Number of 32-bit ASNs allocated by the RIRs:                      38424
Number of 32-bit ASNs visible in the Routing Table:                 614
Prefixes from 32-bit ASNs in the Routing Table:                    1719
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:              5
Number of addresses announced to Internet:                    243047196
    Equivalent to 14 /8s, 124 /16s and 155 /24s
    Percentage of available address space announced:                6.6
    Percentage of allocated address space announced:                6.6
    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:        3054

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

Prefixes being announced by APNIC Region ASes:                     4708
    Total APNIC prefixes after maximum aggregation:                2333
    APNIC Deaggregation factor:                                    2.02
Prefixes being announced from the APNIC address blocks:            4757
    Unique aggregates announced from the APNIC address blocks:     2698
APNIC Region origin ASes present in the Internet Routing Table:     585
    APNIC Prefixes per ASN:                                        8.13
APNIC Region origin ASes announcing only one prefix:                252
APNIC Region transit ASes present in the Internet Routing Table:     63
Average APNIC Region AS path length visible:                        3.9
    Max APNIC Region AS path length visible:                         12
Number of APNIC region 32-bit ASNs visible in the Routing Table:    226
Number of APNIC addresses announced to Internet:               46056768
    Equivalent to 2 /8s, 190 /16s and 197 /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:                     11685
    Total ARIN prefixes after maximum aggregation:                 6311
    ARIN Deaggregation factor:                                     1.85
Prefixes being announced from the ARIN address blocks:            11585
    Unique aggregates announced from the ARIN address blocks:      7771
ARIN Region origin ASes present in the Internet Routing Table:     1229
    ARIN Prefixes per ASN:                                         9.43
ARIN Region origin ASes announcing only one prefix:                 432
ARIN Region transit ASes present in the Internet Routing Table:     162
Average ARIN Region AS path length visible:                         3.0
    Max ARIN Region AS path length visible:                          13
Number of ARIN region 32-bit ASNs visible in the Routing Table:     163
Number of ARIN addresses announced to Internet:               131944956
    Equivalent to 7 /8s, 221 /16s and 81 /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:                      3458
    Total RIPE prefixes after maximum aggregation:                 2782
    RIPE Deaggregation factor:                                     1.24
Prefixes being announced from the RIPE address blocks:             3504
    Unique aggregates announced from the RIPE address blocks:      2878
RIPE Region origin ASes present in the Internet Routing Table:      677
    RIPE Prefixes per ASN:                                         5.18
RIPE Region origin ASes announcing only one prefix:                 322
RIPE Region transit ASes present in the Internet Routing Table:     100
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:     135
Number of RIPE addresses announced to Internet:                58177216
    Equivalent to 3 /8s, 119 /16s and 182 /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:                569
    LACNIC Deaggregation factor:                                   2.57
Prefixes being announced from the LACNIC address blocks:           1468
    Unique aggregates announced from the LACNIC address blocks:     770
LACNIC Region origin ASes present in the Internet Routing Table:    168
    LACNIC Prefixes per ASN:                                       8.74
LACNIC Region origin ASes announcing only one prefix:                69
LACNIC Region transit ASes present in the Internet Routing Table:    22
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:    65
Number of LACNIC addresses announced to Internet:               4189728
    Equivalent to 0 /8s, 63 /16s and 238 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + 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:                    881
    Total AfriNIC prefixes after maximum aggregation:               184
    AfriNIC Deaggregation factor:                                  4.79
Prefixes being announced from the AfriNIC address blocks:           881
    Unique aggregates announced from the AfriNIC address blocks:    290
AfriNIC Region origin ASes present in the Internet Routing Table:    47
    AfriNIC Prefixes per ASN:                                     18.74
AfriNIC Region origin ASes announcing only one prefix:               20
AfriNIC Region transit ASes present in the Internet Routing Table:   10
Average AfriNIC Region AS path length visible:                      2.7
    Max AfriNIC Region AS path length visible:                        7
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   25
Number of AfriNIC addresses announced to Internet:              2677248
    Equivalent to 0 /8s, 40 /16s and 218 /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         577       2157     458  SINET-AS Research Organization of Infor
  7497         432        182      24  CSTNET-AS-AP Computer Network Informati
  1237         189         74     135  KREONET-AS-KR KISTI, KR
 58647         177         18       2  KAGAWAU-AS Kagawa University, JP
  7575         175        330     122  AARNET-AS-AP Australian Academic and Re
 55824         130         19      23  NKN-CORE-NW NKN Core Network, IN
  4538         128       4192      72  ERX-CERNET-BKB China Education and Rese
  4621          80         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        2810       4496    1076  AMAZON-02, US
 14618         570       3987     436  AMAZON-AES, US
  7896         251         51       7  NU-AS, US
   668         212        702     180  DNIC-AS-00668, US
   376         203        178     152  RISQ-AS, CA
  5786         200         16       1  UPRENET, PR
  2152         144        507      86  CSUNET-NW, US
 18558         136         18       4  NETBLK-RCOEK, US
   270         119        329      88  AS270, US
     1         118          1      45  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         279       1950     245  DFN Verein zur Foerderung eines Deutsch
   786         186       1774     183  JANET Jisc Services Limited, GB
  8895         182         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          58         32      55  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         202        207      42  Rede Nacional de Ensino e Pesquisa, BR
 28391         152         10      66  Universidad Juarez Autonoma de Tabasco,
 11340          95         24      55  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 
 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
  2018         349        319      74  TENET-1, ZA
 36914         198         82       3  KENET-AS, KE
  2561          72          5      31  EUN, EG
  8094          50         48       4  PUKNET, ZA
327687          36         28       3  RENU, UG
327700          34         16       1  MoRENet, MZ
  6879          24          2       9  ENSTINET-, EG
 37074          13          8       2  UG-AS, GH
 37182          13          8       1  TERNET, TZ
 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        2810       4496    1076  AMAZON-02, US
  2907         577       2157     458  SINET-AS Research Organization of Infor
 14618         570       3987     436  AMAZON-AES, US
  7497         432        182      24  CSTNET-AS-AP Computer Network Informati
  2018         349        319      74  TENET-1, ZA
   680         279       1950     245  DFN Verein zur Foerderung eines Deutsch
  7896         251         51       7  NU-AS, US
   668         212        702     180  DNIC-AS-00668, US
   376         203        178     152  RISQ-AS, CA
  1916         202        207      42  Rede Nacional de Ensino e Pesquisa, BR

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         432          408  CSTNET-AS-AP Computer Network Information Cente
  2018         349          275  TENET-1, ZA
  7896         251          244  NU-AS, US
  5786         200          199  UPRENET, PR
 36914         198          195  KENET-AS, KE
  8895         182          178  ISU Internet Services Unit ISU, SA
 58647         177          175  KAGAWAU-AS Kagawa University, JP
  1916         202          160  Rede Nacional de Ensino e Pesquisa, BR
 14618         570          134  AMAZON-AES, US
 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
     22063  UNALLOCATED  153.10.0.0/16             2152  CSUNET-NW, US
     22226  UNALLOCATED  156.1.0.0/16              2152  CSUNET-NW, US
     19658  UNALLOCATED  199.27.241.0/24          11096  FLORIDANET, US

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

Prefixes from the Special Purpose Address Registry (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-spar

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
198.135.168.0/24     Origin:     14618  AMAZON-AES, US
198.135.168.0/24    Transit:     16509  AMAZON-02, US
216.169.147.0/24     Origin:     14618  AMAZON-AES, US
216.169.147.0/24    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       /10:2       /11:3       /12:17      
/13:24      /14:59      /15:174     /16:2096    /17:449     /18:467     
/19:596     /20:954     /21:1007    /22:1575    /23:1731    /24:12727   
/25:79      /26:62      /27:123     /28:1       /29:49      /30:0       
/31:2       /32:2       

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

   ASN  No of nets  Total ann.  Description
 16509         736        2810  AMAZON-02, US
 14618         188         570  AMAZON-AES, US
 36914         185         198  KENET-AS, KE
  8895         177         182  ISU Internet Services Unit ISU, SA
 23024          53          56  OCDE, US
     1          35         118  LVLT-1, US
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 25977          31          45  HCCS, US
263282          30          37  FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
327700          30          34  MoRENet, MZ

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

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

   1:4         3:81        4:2         5:16        6:4         8:2      
  12:1        13:165      14:84       15:52       16:5        18:47     
  23:41       24:3        31:6        35:1        37:6        38:9      
  40:1        41:112      42:9        44:5        45:45       46:8      
  47:1        49:10       50:6        52:678      54:180      58:1      
  59:20       60:4        61:3        62:7        63:38       64:125    
  65:5        66:54       67:62       68:17       69:46       70:9      
  71:17       72:18       74:42       75:128      76:165      77:9      
  78:3        79:10       80:16       81:28       82:6        83:6      
  84:9        85:37       86:4        87:1        88:1        89:12     
  91:54       92:1        93:19       94:4        95:6        96:6      
  97:1        98:11       99:181     101:6       102:13      103:341    
 104:46      106:1       107:8       108:20      109:12      110:3      
 111:20      112:4       114:23      116:5       117:61      118:32     
 119:22      121:26      122:11      123:8       124:39      125:4      
 128:81      129:184     130:120     131:89      132:58      133:139    
 134:102     135:1       136:203     137:91      138:9       139:16     
 140:52      141:4       142:58      143:33      144:69      145:2      
 146:129     147:66      148:200     149:16      150:39      151:7      
 152:81      153:11      154:25      155:60      156:69      157:31     
 158:45      159:119     160:30      161:24      162:50      163:61     
 164:53      165:63      166:1       167:21      168:164     169:10     
 170:104     171:1       172:10      173:13      174:1       175:31     
 176:12      177:10      178:3       179:12      180:21      182:6      
 184:13      185:58      186:3       187:18      188:14      189:5      
 190:33      191:33      192:1487    193:255     194:125     195:87     
 196:147     197:111     198:493     199:314     200:254     201:40     
 202:647     203:430     204:351     205:195     206:207     207:190    
 208:94      209:131     210:185     211:13      212:173     213:15     
 214:7       216:144     217:15      218:25      219:6       220:16     
 222:5       223:3      

End of report


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