[REN-BGP-stats-all] IPv4 R&E Routing Table Report - RouteViews PacWave (R&E) view

REN Routing Table Report cscora at bgp.nsrc.org
Sun Sep 3 22:40:39 UTC 2023


IPv4 R&E Routing Table Report   22:40 GMT Sun 03 Sep, 2023

  IPv4 BGP Table (R&E) as seen at RouteViews PacWave.

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

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

BGP routing table entries examined:                               28529
    Prefixes after maximum aggregation (per Origin AS):           14325
    Deaggregation factor:                                          1.99
    Unique aggregates announced (without unneeded subnets):       16823
Total ASes present in the Internet Routing Table:                  2801
    Prefixes per ASN:                                             10.19
Origin-only ASes present in the Internet Routing Table:            2414
Origin ASes announcing only one prefix:                            1060
Transit ASes present in the Internet Routing Table:                 387
Transit-only ASes present in the Internet Routing Table:             72
Paths with bogon ASNs present in the IPv4 Routing Table:              0
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      23
    Max AS path prepend of ASN ( 41264)                              21
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:                      42572
Number of 32-bit ASNs visible in the Routing Table:                 641
Prefixes from 32-bit ASNs in the Routing Table:                    4666
Number of bogon 32-bit ASNs visible in the Routing Table:             0
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:              5
Number of addresses announced to Internet:                    313594112
    Equivalent to 18 /8s, 177 /16s and 17 /24s
    Percentage of available address space announced:                8.5
    Percentage of allocated address space announced:                8.5
    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:        3679

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

Prefixes being announced by APNIC Region ASes:                     4656
    Total APNIC prefixes after maximum aggregation:                2295
    APNIC Deaggregation factor:                                    2.03
Prefixes being announced from the APNIC address blocks:            4798
    Unique aggregates announced from the APNIC address blocks:     2767
APNIC Region origin ASes present in the Internet Routing Table:     543
    APNIC Prefixes per ASN:                                        8.84
APNIC Region origin ASes announcing only one prefix:                225
APNIC Region transit ASes present in the Internet Routing Table:     57
Average APNIC Region AS path length visible:                        4.2
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    205
Number of APNIC addresses announced to Internet:               47190272
    Equivalent to 2 /8s, 208 /16s and 17 /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, 131072-153913
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:                     17713
    Total ARIN prefixes after maximum aggregation:                 8369
    ARIN Deaggregation factor:                                     2.12
Prefixes being announced from the ARIN address blocks:            17292
    Unique aggregates announced from the ARIN address blocks:      9767
ARIN Region origin ASes present in the Internet Routing Table:     1286
    ARIN Prefixes per ASN:                                        13.45
ARIN Region origin ASes announcing only one prefix:                 446
ARIN Region transit ASes present in the Internet Routing Table:     172
Average ARIN Region AS path length visible:                         3.2
    Max ARIN Region AS path length visible:                          15
Number of ARIN region 32-bit ASNs visible in the Routing Table:     200
Number of ARIN addresses announced to Internet:               191300352
    Equivalent to 11 /8s, 103 /16s and 3 /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:                      3651
    Total RIPE prefixes after maximum aggregation:                 2917
    RIPE Deaggregation factor:                                     1.25
Prefixes being announced from the RIPE address blocks:             3925
    Unique aggregates announced from the RIPE address blocks:      3277
RIPE Region origin ASes present in the Internet Routing Table:      684
    RIPE Prefixes per ASN:                                         5.74
RIPE Region origin ASes announcing only one prefix:                 300
RIPE Region transit ASes present in the Internet Routing Table:     105
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          23
Number of RIPE region 32-bit ASNs visible in the Routing Table:     143
Number of RIPE addresses announced to Internet:                67492352
    Equivalent to 4 /8s, 5 /16s and 218 /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
                       196608-216475
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:                    1458
    Total LACNIC prefixes after maximum aggregation:                570
    LACNIC Deaggregation factor:                                   2.56
Prefixes being announced from the LACNIC address blocks:           1459
    Unique aggregates announced from the LACNIC address blocks:     784
LACNIC Region origin ASes present in the Internet Routing Table:    164
    LACNIC Prefixes per ASN:                                       8.90
LACNIC Region origin ASes announcing only one prefix:                63
LACNIC Region transit ASes present in the Internet Routing Table:    25
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    67
Number of LACNIC addresses announced to Internet:               4751872
    Equivalent to 0 /8s, 72 /16s and 130 /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:                   1048
    Total AfriNIC prefixes after maximum aggregation:               171
    AfriNIC Deaggregation factor:                                  6.13
Prefixes being announced from the AfriNIC address blocks:          1050
    Unique aggregates announced from the AfriNIC address blocks:    223
AfriNIC Region origin ASes present in the Internet Routing Table:    50
    AfriNIC Prefixes per ASN:                                     21.00
AfriNIC Region origin ASes announcing only one prefix:               26
AfriNIC Region transit ASes present in the Internet Routing Table:    9
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   26
Number of AfriNIC addresses announced to Internet:              2792704
    Equivalent to 0 /8s, 42 /16s and 157 /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         593       2163     465  SINET-AS Research Organization of Infor
  7497         435        180      23  CSTNET-AS-AP Computer Network Informati
  1237         191         74     139  KREONET-AS-KR KISTI, KR
  7575         177        329     120  AARNET-AS-AP Australian Academic and Re
 58647         177         18       2  KAGAWAU-AS Kagawa University, JP
  4538         130       4192      73  ERX-CERNET-BKB China Education and Rese
 55824         123         18      16  NKN-CORE-NW NKN Core Network, IN
  4621          70         37      10  UNINET-AS-AP UNINET-, TH
  9411          66         16       2  NONTRINET-AS-AP Kasetsart University, T
  4762          61          4       1  MAHIDOL-BORDER-AS Mahidol University, T

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        4380       4610    1997  AMAZON-02, US
396982        2686       3596     386  GOOGLE-CLOUD-PLATFORM, US
 15169         827       2001      62  GOOGLE, US
 14618         812       4019     611  AMAZON-AES, US
  8075         375      12791     318  MICROSOFT-CORP-MSN-AS-BLOCK, US
  2152         317        507      94  CSUNET-NW, US
   668         203        651     172  DNIC-AS-00668, US
   376         201        178     150  RISQ-AS, CA
  5786         195         16       1  UPRENET, PR
 36492         157         11      35  GOOGLEWIFI, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         283       1903     249  DFN Verein zur Foerderung eines Deutsch
   786         185       1767     182  JANET Jisc Services Limited, GB
  8895         135         24       5  ISU Internet Services Unit ISU, SA
   559         113        533     105  SWITCH Peering requests: peering at switch
  1103          94       1502      83  SURFNET-NL SURFnet, The Netherlands, NL
  2614          94         27      74  ROEDUNET, RO
   137          82        677      77  ASGARR Consortium GARR, IT
   553          74        465      74  BELWUE BelWue-Koordination, DE
  1930          65         81      60  RCCN Fundacao para a Ciencia e a Tecnol
  2200          64        599      59  FR-RENATER Reseau National de telecommu

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  1916         221        176      42  Rede Nacional de Ensino e Pesquisa, BR
 28391         153         10      67  Universidad Juarez Autonoma de Tabasco,
 11340         104         24      48  Red Universitaria Nacional, CL
271640          72          8       1  UNIVERSIDADE FEDERAL DE VICOSA, BR
  2715          59        102      39  Fundacao Carlos Chagas Filho de Amparo 
  4270          48         16       1  Red de Interconexion Universitaria, AR
 19611          48         17       2  Associacao Antonio Vieira - Unisinos, B
 61468          43          3      14  CEDIA, EC
 28614          38          2       2  Fundacao Universidade Regional de Blume
  3596          34          4       3  Universidad Autonoma Metropolitana, MX

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2018         371        319      71  TENET-1, ZA
 36914         253         82       3  KENET-AS, KE
327687         162         28       3  RENU, UG
  8094          48         48      15  PUKNET, ZA
327700          41         16       1  MoRENet, MZ
  3208          32          2       1  ARN, DZ
  6879          24          2       9  ENSTINET-, EG
 37074          14          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA
 37654          10          1       6  RwEdNet-AS, RW

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        4380       4610    1997  AMAZON-02, US
396982        2686       3596     386  GOOGLE-CLOUD-PLATFORM, US
 15169         827       2001      62  GOOGLE, US
 14618         812       4019     611  AMAZON-AES, US
  2907         593       2163     465  SINET-AS Research Organization of Infor
  7497         435        180      23  CSTNET-AS-AP Computer Network Informati
  8075         375      12791     318  MICROSOFT-CORP-MSN-AS-BLOCK, US
  2018         371        319      71  TENET-1, ZA
  2152         317        507      94  CSUNET-NW, US
   680         283       1903     249  DFN Verein zur Foerderung eines Deutsch

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

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

   ASN  No of nets  Net Savings  Description
396982        2686         2300  GOOGLE-CLOUD-PLATFORM, US
 15169         827          765  GOOGLE, US
  7497         435          412  CSTNET-AS-AP Computer Network Information Cente
  2018         371          300  TENET-1, ZA
 36914         253          250  KENET-AS, KE
  2152         317          223  CSUNET-NW, US
 14618         812          201  AMAZON-AES, US
  5786         195          194  UPRENET, PR
  1916         221          179  Rede Nacional de Ensino e Pesquisa, BR
 58647         177          175  KAGAWAU-AS Kagawa University, JP

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    394607  UNALLOCATED  104.249.65.0/24          23024  OCDE, US
     33008  UNALLOCATED  162.248.66.0/24          11096  FLORIDANET, US
    394607  UNALLOCATED  216.100.93.0/24          23024  OCDE, US

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

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

Unassigned Network     ASN Information  AS Name
64.186.3.0/24        Origin:     16509  AMAZON-02, US
64.186.3.0/24       Transit:       101  WASH-NSF-AS, US
134.208.0.0/16       Origin:     17711  NDHU-TW National Dong Hwa University, TW
134.208.0.0/16      Transit:      7539  TWAREN-TW National Center for High-perfo
192.31.196.0/24      Origin:       112  RESERVED, ZZ
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
198.135.168.0/24     Origin:     14618  AMAZON-AES, US
198.135.168.0/24    Transit:     16509  AMAZON-02, US
202.58.231.0/24      Origin:    134096  EHEALTHNSW-AS-AP eHealth NSW, AU
202.58.231.0/24     Transit:      7575  AARNET-AS-AP Australian Academic and Res

Complete listing at https://bgp.nsrc.org/REN/PacWave/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       /11:11      /12:33      
/13:46      /14:112     /15:209     /16:2231    /17:571     /18:508     
/19:757     /20:2865    /21:1292    /22:2015    /23:2095    /24:15779   
/25:0       /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

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

   ASN  No of nets  Total ann.  Description
 16509         716        4380  AMAZON-02, US
 15169         275         827  GOOGLE, US
 14618         265         812  AMAZON-AES, US
 36914         242         253  KENET-AS, KE
396982         196        2686  GOOGLE-CLOUD-PLATFORM, US
  8895         130         135  ISU Internet Services Unit ISU, SA
  8075          71         375  MICROSOFT-CORP-MSN-AS-BLOCK, US
 23024          52         113  OCDE, US
 32440          37          59  LONI, US
327700          36          41  MoRENet, MZ

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

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

   1:3         2:1         3:127       4:2         5:21        6:4      
   8:28       12:1        13:180      14:88       15:128      16:109    
  18:245      23:124      24:3        31:9        34:20       35:56     
  38:9        40:2        41:116      42:10       43:1        44:8      
  45:74       46:15       47:1        49:9        50:12       52:880    
  54:265      58:2        59:19       60:4        61:3        62:18     
  63:45       64:187      65:39       66:99       67:66       68:20     
  69:52       70:41       71:45       72:18       74:144      76:48     
  77:11       78:3        79:10       80:13       81:27       82:6      
  83:6        84:13       85:46       86:10       87:2        88:1      
  89:17       91:60       92:6        93:4        94:8        95:2      
  96:6        97:2        98:14       99:77      101:3       102:28     
 103:320     104:231     107:36      108:162     109:12      111:17     
 113:4       114:31      115:1       116:10      117:61      118:32     
 119:18      121:28      122:11      123:8       124:39      125:4      
 128:87      129:52      130:158     131:75      132:57      133:152    
 134:107     135:4       136:297     137:150     138:15      139:18     
 140:43      141:6       142:281     143:35      144:69      145:5      
 146:132     147:71      148:203     149:18      150:50      151:24     
 152:151     153:14      154:30      155:81      156:71      157:30     
 158:44      159:157     160:35      161:51      162:115     163:94     
 164:22      165:56      166:2       167:25      168:166     169:12     
 170:173     171:1       172:117     173:121     174:2       175:26     
 176:14      177:5       178:2       179:13      180:15      181:1      
 182:1       184:4       185:133     186:3       187:17      188:19     
 189:3       190:19      191:13      192:1562    193:313     194:137    
 195:90      196:201     197:166     198:612     199:371     200:339    
 201:38      202:648     203:444     204:408     205:176     206:224    
 207:246     208:146     209:206     210:190     211:14      212:174    
 213:17      214:8       216:211     217:11      218:22      219:5      
 220:16      222:2       223:14     

End of report


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